Add minPermGen and minHeapSize settings for defaults(1) which will be used preallocate Java's HeapSize and PermSize.
Set defaults for Java heap and perms on both i386 and x64_64 architectures. The x64_64 settings work for me. Recommend that they be reviewed by a Java/OSX dev.
Merge pull request #828 from jkeroes/master

Add more control of Java heap and perm sizing on OSX and set defaults.