fixed mingw emitter to convert str to node before accessing node memb…

…er, and updated mingw to remove MSVC like nologo flag

src/engine/SCons/Tool/link.py

@@ -81,6 +81,8 @@ def _lib_emitter(target, source, env, **kw):
     if Verbose:
         print("_lib_emitter: target[0]={!r}".format(target[0].get_path()))
     for tgt in target:
+        if SCons.Util.is_String(tgt):
+            tgt = env.File(tgt)
         tgt.attributes.shared = 1
 
     try:

src/engine/SCons/Tool/mingw.py

@@ -167,7 +167,8 @@ def generate(env):
 
     env['SHOBJSUFFIX'] = '.o'
     env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 1
-
+    if 'CCFLAGS' in env:
+        env['CCFLAGS'] = SCons.Util.CLVar(str(env['CCFLAGS']).replace('/nologo', ''))
     env['RC'] = 'windres'
     env['RCFLAGS'] = SCons.Util.CLVar('')
     env['RCINCFLAGS'] = '$( ${_concat(RCINCPREFIX, CPPPATH, RCINCSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)'