Bug 545912: [Mac] Installed JRE Search should default directory dialog to java home Set default directory dialog to /Library/Java/JavaVirtualMachines. Restored the fast doMacSearch() code. Use doMacSearch() if chosen directory is /Library/Java/JavaVirtualMachines Change-Id: I0481f73a2787a841f449b709cfaebc4ca20dc78a Signed-off-by: Lakshmi Shanmugam <lshanmug@in.ibm.com>