* merge x64 improvements from mbuild.sh into build.sh
* drop mbuild.sh
* add logic to determine the location of JAVA_HOME if not defined.
* update core/c/mbuild to call jcpuid/build.sh
imported Iakin's modifications to jbigi to use the jcpuid library in detecting what jbigi implementation to load
imported and slightly updated Iakin's scripts to build jbigi for lots of architectures
(yay iakin!)