Revert "Rev to JRuby 1.6.4.  The POSIX environment issue is still outstanding."
Revert "Rev to JRuby 1.6.4.  The POSIX environment issue is still outstanding."

This reverts commit 00c9cd5fa3159e8cac6051447b5555b302dd85d4.

torquebox/torquebox-release,mje113/torquebox,mje113/torquebox,ksw2599/torquebox,samwgoldman/torquebox,torquebox/torquebox-release,samwgoldman/torquebox,mje113/torquebox,ksw2599/torquebox,vaskoz/torquebox,vaskoz/torquebox,torquebox/torquebox,torquebox/torquebox-release,mje113/torquebox,torquebox/torquebox,torquebox/torquebox,samwgoldman/torquebox,torquebox/torquebox-release,vaskoz/torquebox,vaskoz/torquebox,samwgoldman/torquebox,ksw2599/torquebox,ksw2599/torquebox,torquebox/torquebox