Breaking changes

[Magnus Ihse Bursie]

I've checked in the removal of makefiles/JvmFeaturesConf.gmk. This file 
was previously (as a hack) included from spec.gmk. This means that "make 
reconfigure" will fail, since spec.gmk can't find a needed file. (And 
also CONF_CHECK=auto)

Some suggested workarounds:
1) touch hotspot/makefiles/JvmFeaturesConf.gmk -- then "make 
reconfigure" works and you can delete the file
2) manually edit the spec.gmk and remove the include.
3) rerun configure explicitly. "make print-configuration" will not work, 
so you'll have to check the configure command line in the spec file and 
copy/paste.

Sorry for the inconvenience.

/Magnus