prepare release 3.1.0 (Issue #61)
[Maven][Eclipse] updated versions to 3.1.1
[aspect] update the bundled Javassist version to 3.18.2-GA (Issue #65, #59)
[aspect.org.eclipse.php.core] change SystemIncludePathAspect to avoid raising a javassist.CannotCompileException (Issue #65, #59)
Merge tag 'v3.1.1'

release 3.1.1

Conflicts:
	com.piece_framework.makegood.aspect.org.eclipse.php.core/META-INF/MANIFEST.MF
	com.piece_framework.makegood.aspect.org.eclipse.php.core/pom.xml
	com.piece_framework.makegood.aspect.org.eclipse.php.debug.core/META-INF/MANIFEST.MF
	com.piece_framework.makegood.aspect.org.eclipse.php.debug.core/pom.xml
	com.piece_framework.makegood.aspect.org.eclipse.php.ui/META-INF/MANIFEST.MF
	com.piece_framework.makegood.aspect.org.eclipse.php.ui/pom.xml
	com.piece_framework.makegood.aspect.org.eclipse.ui.console/META-INF/MANIFEST.MF
	com.piece_framework.makegood.aspect.org.eclipse.ui.console/pom.xml
	com.piece_framework.makegood.aspect/META-INF/MANIFEST.MF
	com.piece_framework.makegood.aspect/pom.xml
	com.piece_framework.makegood.core.test/pom.xml
	com.piece_framework.makegood.core/META-INF/MANIFEST.MF
	com.piece_framework.makegood.core/pom.xml
	com.piece_framework.makegood.includepath/META-INF/MANIFEST.MF
	com.piece_framework.makegood.includepath/pom.xml
	com.piece_framework.makegood.launch/META-INF/MANIFEST.MF
	com.piece_framework.makegood.launch/pom.xml
	com.piece_framework.makegood.p2repository/category.xml
	com.piece_framework.makegood.p2repository/pom.xml
	com.piece_framework.makegood.stagehandtestrunner/META-INF/MANIFEST.MF
	com.piece_framework.makegood.stagehandtestrunner/pom.xml
	com.piece_framework.makegood.ui/META-INF/MANIFEST.MF
	com.piece_framework.makegood.ui/pom.xml
	com.piece_framework.makegood_feature/feature.xml
	com.piece_framework.makegood_feature/pom.xml
	pom.xml