Move release date to 2016-06-21

Fill release date

Final release notes.

Added release date.

Updated libtool version info.

fix busted %changelog entry

Set the release date.

Fix the release date... again.

A last-minute report suggests a problem with this using at least some

versions of egcs, so disable FASTCALL for GCC as well.  We are now not using
this for any platform.  ;-(

Present signature lines for function declarations much more

consistently.