Investigate comments from Jukzi regarding full build

[fedejeanne]

See eclipse-jdt/eclipse.jdt.core#3411 (comment)

Please also note that the provided snapshot still contains hotspots that should not be there. for example spending 65 sec below org.eclipse.jdt.internal.core.builder.ClasspathDirectory.isPackage() does not make sense, so there should be much more room for optimization. or still 36 sec below org.eclipse.jdt.internal.compiler.lookup.TypeBinding.findSuperTypeOriginatingFrom () 12 sec below org.eclipse.osgi.internal.resolver.StateHelperImpl.getPackages () WTH

I hope you can contribute more performance improvements :-)

Investigate (at least) these and create the corresponding issues for them:

• org.eclipse.jdt.internal.core.builder.ClasspathDirectory.isPackage() (65s)
• org.eclipse.jdt.internal.compiler.lookup.TypeBinding.findSuperTypeOriginatingFrom () (36s)
• org.eclipse.osgi.internal.resolver.StateHelperImpl.getPackages () (12s)