[maven-release-plugin] prepare release pmd_releases/5.1.0
[maven-release-plugin] prepare for next development iteration
Deleted all the folders that have been moved out into own repositories.

pmd-eclipse-plugin -> https://github.com/pmd/pmd-eclipse-plugin
pmd-jdeveloper* -> https://github.com/pmd/pmd-jdeveloper
website -> https://github.com/pmd/pmd.sourceforge.net
pmd-emacs -> https://github.com/pmd/pmd-emacs
everything else -> https://github.com/pmd/pmd-misc
Fix #1185 UnusedModifier throws NPE when parsing enum with a nested static interface
Fix #1165 SimplifyConditional false positive
Fix #1167 Error while processing PLSQL file with BOM
Fixed NPE in ConsecutiveAppendsShouldReuseRule.getVariableAppended() which was triggered with the dogfood ruleset
Added support for enums in CommentRequiredRule and extended corresponsing test
Fix #1188 False positive in UnusedPrivateField
Verify #1189 GuardLogStatementRule and GuardDebugLoggingRule broken for log4j2
Merge branch 'master' of https://github.com/igniti-gmbh/pmd into igniti-gmbh-master
Merge branch 'commentrequired-enums' of https://github.com/igniti-gmbh/pmd into igniti-gmbh-master
Update changelog
Checkstyle fixes
Fix changelog layout
Checkstyle fixes.
Adding TodoComment checkstyle rule.
Fix #1191 Ecmascript fails to parse "void(0)"
Merge branch 'pmd/5.1.x'
Prepare pmd release 5.1.1