Pullup version 1.3 of pkgsrc/mbone/common-mml, revs 1.1 of

Pullup version 1.3 of pkgsrc/mbone/common-mml, revs 1.1 of
patches/patch-a{d,e,f} and rev 1.2 of patches/patch-ag, and a regenned
distinfo file, onto the netbsd-1-6 pkgsrc branch.

Requested by Dan McMahill.

Correctly uses the autoconf checks for inet_ntop and inet_pton.  Fixes
this package on sparc (and probably all other big endian machines).
Change has also been tested on alpha (little endian) to make sure it
didn't break things there.  There are still some issues on the alpha but
they appear to be LP64 and alignment related, not endian related and
they were present before this change too.