Added .gitignore for IntelliJ IDEA *.iml files
Issue #11: log via slf4j; Issue #12: deal with NIO locks on Windows
Remove exec bit from xml files
Converted additional System.err.println to Logger.error
Fixed exec bit
Removed duplicate property and executable bit
Addressed @FelixGV comments (make JUL-through-SLF4J routing less intrusive)

Conflicts:
	.gitignore
Reset execute bit on non-executable files. Darn windows.
Maintaining support for JRE 6 for now.
Cleaned up the ShutDownListener log messages.