Fix segfault on i386 and powerpc64

Reported by:	hrs, adrian
Tested by:	hrs
Prevent 'pkg update' will always think that the repo is up to date if no
mtime header is sent by the http server

Submitted by:	cperciva
Bump port revision to match the ports tree
pkg -N returns 0 on success >0 on not ready

This should not be copied to release-1.0 unless
-N support is also copied.
New release 1.0.14
Actually commit the right fix from cperciva