Makefile: Changes to split Solaris into Solaris2.3 and previous, and 2.4 and after...

Makefile: Changes to split Solaris into Solaris2.3 and previous, and 2.4 and after from Paul Eggert.
Makefile: Added AMIGA changes from Rask Ingemann Lambertsen <rask@k4315.kampsax.dtu.dk>.
charset.c: Patch for Western European Languages from Josef Hinteregger <joehtg@joehtg.co.at>
charset.h: Patch for Western European Languages from Josef Hinteregger <joehtg@joehtg.co.at>
clitar.c: Patch to re-sync after read fail from (lost contributor name, sorry).
includes.h: Patch for AMIGA from Rask Ingemann Lambertsen <rask@k4315.kampsax.dtu.dk>
includes.h: Patch for SunOS atexit by Jeremy (jra@cygnus.com)
interface.c: Patch for AMIGA from Rask Ingemann Lambertsen <rask@k4315.kampsax.dtu.dk>
kanji.h: Patch for Western European Languages from Josef Hinteregger <joehtg@joehtg.co.at>
locking.c: Patch to fix file locking from Jeremy (jra@cygnus.com)
locking.c: Patch to add granularity of lock files to usec by Jeremy (jra@cygnus.com)
pipes.c: Patch to fix file locking from Jeremy (jra@cygnus.com)
proto.h: Patch to fix file locking from Jeremy (jra@cygnus.com)
reply.c: Patch to fix file locking from Jeremy (jra@cygnus.com)
server.c: Patch to fix file locking from Jeremy (jra@cygnus.com)
server.c: Patch for FAST_SHARE_MODE fix from (lost contributor name, sorry).
smb.h: Patch to fix file locking from Jeremy (jra@cygnus.com)
smb.h: Patch to add granularity of lock files to usec by Jeremy (jra@cygnus.com)
status.c: Patch to fix file locking from Jeremy (jra@cygnus.com)
statuc.c: Patch to add granularity of lock files to usec by Jeremy (jra@cygnus.com)
system.c: Patch for Western European Languages from Josef Hinteregger <joehtg@joehtg.co.at>
trans2.c: Patch to fix file locking from Jeremy (jra@cygnus.com)
trans2.c: Patch to fix volume name reported to Win95 from Jeremy (jra@cygnus.com)
util.c: Patch for Western European Languages from Josef Hinteregger <joehtg@joehtg.co.at>
util.c: Patch to fix client_name from continuously returning UNKNOWN (from various contributors).
version.h: Update to 1.9.16p10.
(This used to be commit 03d28fa32eb094affa33133ebe2602fdb70f6361)