Added InputStream.closeIf
Added OutputStream.closeIf
Added closeIn, closeOut parameters to InputStream.read, closes #73
Added closeOut, closeIn parameters to OutputStream.write, closes #74
Merge branch 'master' into 2.9

Conflicts:
	core/src/main/scala/pimpathon/java/io/InputStream.scala
	core/src/main/scala/pimpathon/java/io/OutputStream.scala
	core/src/test/scala/pimpathon/util.scala
	project/Build.scala