Restructure JDT core to get proper ecj bundle (#181)

The org.eclipse.jdt.core.ecj.validation was a "dummy" bundle so far,
used only to validate compilation issues in IDE.

That one is renamed (org.eclipse.jdt.core.ecj.validation ->
org.eclipse.jdt.core.compiler.batch) and is a proper maven library now.

It is actually the ecj compiler library without any dependencies (except
optional ant), that could be consumed by JDT and the rest of the world.

It must be required and re-exported by JDT core.

Unfortunately, there are two split packages:

- org.eclipse.jdt.internal.compiler
- org.eclipse.jdt.internal.compiler.parser

So the new bundle exports them to jdt.core and jdt.core re-exports.

org.eclipse.jdt.compiler.apt and org.eclipse.jdt.compiler.tool were
fragments of jdt.core, now they are inside
org.eclipse.jdt.core.compiler.batch.

TODO:

1) What I did NOT tried is to re-write all the magic scripts that build
and package separated ecj library out of jdt.core.
2) The 3 antadapter classes are now split over ecj and jdt core, because
BuildJarIndex.java and CheckDebugAttributes.java depend on JDT core
code.
3) ecj.1 and build_ecj.xml aren't touched yet. ecj.1 was touched last
time 2017, it seem to be used for man pages.
4) pom from jdt core will need an adoption.
5) org.eclipse.jdt-feature need to be updated
6) TBC

See
- #181
- eclipse-platform/eclipse.platform.ua#18

org.eclipse.jdt.apt.core/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.jdt.apt.core; singleton:=true
-Bundle-Version: 3.7.50.qualifier
+Bundle-Version: 3.7.100.qualifier
 Bundle-Localization: plugin
 Export-Package: com.sun.mirror.apt,
  com.sun.mirror.declaration,
@@ -18,7 +18,7 @@ Export-Package: com.sun.mirror.apt,
  org.eclipse.jdt.apt.core.internal.type;x-friends:="org.eclipse.jdt.apt.pluggable.core,org.eclipse.jdt.apt.tests,org.eclipse.jdt.apt.ui,org.eclipse.jdt.apt.pluggable.tests",
  org.eclipse.jdt.apt.core.internal.util;x-friends:="org.eclipse.jdt.apt.pluggable.core,org.eclipse.jdt.apt.tests,org.eclipse.jdt.apt.ui,org.eclipse.jdt.apt.pluggable.tests",
  org.eclipse.jdt.apt.core.util
-Require-Bundle: org.eclipse.jdt.core;bundle-version="[3.27.0,4.0.0)",
+Require-Bundle: org.eclipse.jdt.core;bundle-version="[3.33.0,4.0.0)",
  org.eclipse.core.runtime;bundle-version="[3.5.100,4.0.0)",
  org.eclipse.core.resources;bundle-version="[3.6.0,4.0.0)",
  org.apache.ant;bundle-version="1.6.5"

org.eclipse.jdt.apt.core/pom.xml

@@ -17,6 +17,6 @@
     <version>4.27.0-SNAPSHOT</version>
   </parent>
   <artifactId>org.eclipse.jdt.apt.core</artifactId>
-  <version>3.7.50-SNAPSHOT</version>
+  <version>3.7.100-SNAPSHOT</version>
   <packaging>eclipse-plugin</packaging>
 </project>

org.eclipse.jdt.apt.core/src/org/eclipse/jdt/apt/core/internal/AptPlugin.java

@@ -270,7 +270,7 @@ public static void deleteAptProject(IJavaProject javaProject) {
 	public static boolean canRunJava6Processors() {
 		if (_java6ProcessorClass == null)
 			return false;
-		return Platform.getBundle("org.eclipse.jdt.compiler.apt") != null; //$NON-NLS-1$
+		return Platform.getBundle("org.eclipse.jdt.core.compiler.batch") != null; //$NON-NLS-1$
 	}
 
 	/**

org.eclipse.jdt.apt.pluggable.core/META-INF/MANIFEST.MF

@@ -2,22 +2,18 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.jdt.apt.pluggable.core;singleton:=true
-Bundle-Version: 1.3.0.qualifier
+Bundle-Version: 1.3.100.qualifier
 Bundle-Activator: org.eclipse.jdt.internal.apt.pluggable.core.Apt6Plugin
 Bundle-Vendor: %providerName
 Require-Bundle: org.eclipse.core.runtime,
  org.eclipse.jdt.apt.core,
- org.eclipse.jdt.core,
- org.eclipse.core.resources
+ org.eclipse.core.resources,
+ org.eclipse.jdt.core;bundle-version="3.33.0"
 Bundle-ActivationPolicy: lazy
 Export-Package: org.eclipse.jdt.internal.apt.pluggable.core;x-internal:=true,
  org.eclipse.jdt.internal.apt.pluggable.core.dispatch;x-internal:=true,
  org.eclipse.jdt.internal.apt.pluggable.core.filer;x-internal:=true
 Bundle-Localization: plugin
-Import-Package: org.eclipse.jdt.internal.compiler.tool,
- org.eclipse.jdt.internal.compiler.apt.dispatch,
- org.eclipse.jdt.internal.compiler.apt.model,
- org.eclipse.jdt.internal.compiler.apt.util
 Bundle-RequiredExecutionEnvironment: JavaSE-11
 Automatic-Module-Name: org.eclipse.jdt.apt.pluggable.core
 

org.eclipse.jdt.apt.pluggable.core/pom.xml

@@ -17,6 +17,6 @@
     <version>4.27.0-SNAPSHOT</version>
   </parent>
   <artifactId>org.eclipse.jdt.apt.pluggable.core</artifactId>
-  <version>1.3.0-SNAPSHOT</version>
+  <version>1.3.100-SNAPSHOT</version>
   <packaging>eclipse-plugin</packaging>
 </project>

org.eclipse.jdt.apt.pluggable.tests/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.jdt.apt.pluggable.tests;singleton:=true
-Bundle-Version: 3.5.0.qualifier
+Bundle-Version: 3.5.100.qualifier
 Bundle-Activator: org.eclipse.jdt.apt.pluggable.tests.Apt6TestsPlugin
 Bundle-Localization: plugin
 Require-Bundle: org.junit,
@@ -13,7 +13,7 @@ Require-Bundle: org.junit,
  org.eclipse.jdt.core.tests.builder,
  org.eclipse.jdt.core.tests.compiler,
  org.eclipse.test.performance,
- org.eclipse.jdt.core,
+ org.eclipse.jdt.core;bundle-version="3.33.0",
  org.eclipse.ui.ide,
  org.eclipse.jdt.annotation;bundle-version="[1.1.0,2.0.0)";resolution:=optional,
  org.eclipse.jdt.annotation;bundle-version="[2.0.0,3.0.0)";resolution:=optional

org.eclipse.jdt.apt.pluggable.tests/pom.xml

@@ -19,7 +19,7 @@
     <relativePath>../tests-pom/</relativePath>
   </parent>
   <artifactId>org.eclipse.jdt.apt.pluggable.tests</artifactId>
-  <version>3.5.0-SNAPSHOT</version>
+  <version>3.5.100-SNAPSHOT</version>
   <packaging>eclipse-test-plugin</packaging>
   <properties>
   	<testSuite>${project.artifactId}</testSuite>

org.eclipse.jdt.compiler.apt.tests/META-INF/MANIFEST.MF

@@ -2,14 +2,15 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.jdt.compiler.apt.tests;singleton:=true
-Bundle-Version: 1.2.200.qualifier
+Bundle-Version: 1.2.300.qualifier
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: JavaSE-11
 Require-Bundle: org.junit,
- org.eclipse.jdt.core;bundle-version="3.27.0",
+ org.eclipse.jdt.core;bundle-version="3.33.0",
  org.eclipse.core.resources,
- org.eclipse.core.runtime
+ org.eclipse.core.runtime,
+ org.eclipse.jdt.core.compiler.batch;bundle-version="3.33.0"
 Export-Package: org.eclipse.jdt.compiler.apt.tests,
  org.eclipse.jdt.compiler.apt.tests.annotations,
  org.eclipse.jdt.compiler.apt.tests.processors.base,

org.eclipse.jdt.compiler.apt.tests/pom.xml

@@ -19,7 +19,7 @@
     <relativePath>../tests-pom/</relativePath>
   </parent>
   <artifactId>org.eclipse.jdt.compiler.apt.tests</artifactId>
-  <version>1.2.200-SNAPSHOT</version>
+  <version>1.2.300-SNAPSHOT</version>
   <packaging>eclipse-test-plugin</packaging>
 
   <properties>