- Add packageBinaries support for Mac OS X

- General cleanups to packageBinaries:
	- Generalized support for non-standard tar & make names
	- Fix runConfigure invocation so that it doesn't require that
	  current directory be in path. (It now actually runs!)
	- Support for per-platform overrides of option defaults.


git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@174524 13f79535-47bb-0310-9956-ffa450edef68