Add spoofax tests to the build.
Merge branch 'master' into core
Fix running tests on OSX.
Merge branch 'master' into core

Conflicts:
	org.metaborg.maven.parent/pom.xml
Merge branch 'master' into core
Increase stack size for tests.
Merge branch 'master' into core
Remove Spoofax's Eclipse runtime tests.
Merge branch 'core'