Deprecation of ClassFinder#findImplementors(XXX) in favour of
ClassFinder#findSubTypes(XXX).
New ClassFinder#findSubTypes(Class) method for finding subtypes in
classpath using classpath roots.
Deprecation of FileUtil#deleteFile(File) in favour of
FileUtil#delete(File).
FileUtil#delete(File) now invokes System.gc() upon deletion failure to
fix a known java bug when trying to delete files on windows.
Merge branch 'develop' of ssh://git@github.com/Norconex/commons-lang.git
into develop

Conflicts:
	norconex-commons-lang/src/changes/changes.xml