jar source path might be urlencoded, doesn't work on Windows.
improve support for equals as name/value separator
add some javadoc
revert some inadvertent changes
rename setter
Merge pull request #73

Conflicts:
	args4j/src/org/kohsuke/args4j/CmdLineParser.java
What appears to be a left-over from debugging
Unused function
Moving the setting to ParserProperties
Fixing the inconsistency in naming methods
Avoid using deprecated methods
Generalizing this by allowing arbitrary string