0.9.3 unable to use only JGit

[c0d3r85]

When there is no git in the system, then (useJGit enabled):

java.io.IOException: Cannot run program "git": error=2, Нет такого файла или каталога
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
	at scala.sys.process.ProcessBuilderImpl$Simple.run(ProcessBuilderImpl.scala:68)
	at scala.sys.process.ProcessBuilderImpl$AbstractBuilder.lines(ProcessBuilderImpl.scala:140)
	at scala.sys.process.ProcessBuilderImpl$AbstractBuilder.lines_$bang(ProcessBuilderImpl.scala:108)
	at com.typesafe.sbt.SbtGit$$anonfun$buildSettings$11.apply(SbtGit.scala:138)
	at com.typesafe.sbt.SbtGit$$anonfun$buildSettings$11.apply(SbtGit.scala:122)
	at sbt.Init$Value$$anonfun$apply$13.apply(Settings.scala:609)
	at sbt.EvaluateSettings$$anonfun$sbt$EvaluateSettings$$constant$1.apply(INode.scala:163)
	at sbt.EvaluateSettings$$anonfun$sbt$EvaluateSettings$$constant$1.apply(INode.scala:163)
	at sbt.EvaluateSettings$MixedNode.evaluate0(INode.scala:175)
	at sbt.EvaluateSettings$INode.evaluate(INode.scala:135)
	at sbt.EvaluateSettings$$anonfun$sbt$EvaluateSettings$$submitEvaluate$1.apply$mcV$sp(INode.scala:69)
	at sbt.EvaluateSettings.sbt$EvaluateSettings$$run0(INode.scala:78)
	at sbt.EvaluateSettings$$anon$3.run(INode.scala:74)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: error=2, Нет такого файла или каталога
	at java.lang.UNIXProcess.forkAndExec(Native Method)
	at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
	at java.lang.ProcessImpl.start(ProcessImpl.java:134)
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
	at scala.sys.process.ProcessBuilderImpl$Simple.run(ProcessBuilderImpl.scala:68)
	at scala.sys.process.ProcessBuilderImpl$AbstractBuilder.lines(ProcessBuilderImpl.scala:140)
	at scala.sys.process.ProcessBuilderImpl$AbstractBuilder.lines_$bang(ProcessBuilderImpl.scala:108)
	at com.typesafe.sbt.SbtGit$$anonfun$buildSettings$11.apply(SbtGit.scala:138)
	at com.typesafe.sbt.SbtGit$$anonfun$buildSettings$11.apply(SbtGit.scala:122)
	at sbt.Init$Value$$anonfun$apply$13.apply(Settings.scala:609)
	at sbt.EvaluateSettings$$anonfun$sbt$EvaluateSettings$$constant$1.apply(INode.scala:163)
	at sbt.EvaluateSettings$$anonfun$sbt$EvaluateSettings$$constant$1.apply(INode.scala:163)
	at sbt.EvaluateSettings$MixedNode.evaluate0(INode.scala:175)
	at sbt.EvaluateSettings$INode.evaluate(INode.scala:135)
	at sbt.EvaluateSettings$$anonfun$sbt$EvaluateSettings$$submitEvaluate$1.apply$mcV$sp(INode.scala:69)
	at sbt.EvaluateSettings.sbt$EvaluateSettings$$run0(INode.scala:78)
	at sbt.EvaluateSettings$$anon$3.run(INode.scala:74)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)