cleanup: Remove ports depending on expired lang/gcc6-aux

Keep ports-mgmt/synth and dependencies (including lang/gcc6-aux itself)
for now as synth is the only Ada port still maintained and might be
somewhat high-profile.

Removed ports:
archivers/zip-ada
cad/ghdl
databases/adabase
databases/apq
databases/apq-mysql
databases/apq-odbc
databases/apq-pgsql
devel/ada-util

textproc/py-sphinx: Update to 4.3.1

ChangeLog:	https://github.com/sphinx-doc/sphinx/blob/v4.3.1/CHANGES
PR:		257116
Approved by:	python (dbaio)

Remove # $FreeBSD$ from Makefiles.

Bump PORTREVISIONs of all users of math/mpc that we just updated to
version 1.1.0 (via revision 464079).

Return ports maintained by John Marino to the pool, he is no longer interested.

Submitted by:	Mark Millard via private e-mail

Return the ports mistakenly reset to ports@ in r433856 to John Marino.

The mistake was completely on my part, I somehow connected the dots the
wrong way in my head.

The only exceptions (for now) are archivers/zstd and ports-mgmt/synth
which were already picked up by new volunteers in the mean time.

Return ports maintained by John Marino to the pool, see r433827 for details

${RM} already has -f.

PR:		213570
Submitted by:	mat
Exp-run by:	antoine
Sponsored by:	Absolight

lang/asis: Upgrade version 2015 => 2016

Bump ports that depend on ASIS as well.

textproc/xmlada: Upgrade version 4.6.0.0 => 17.0.0 (scheme change)

The numbering scheme changed to presumably match years (e.g. 17 => 2017)
Bump everything with a build dependency as there is a matching soname
change.  Everything still builds on a DF exp-run.

- Fix trailing whitespace in pkg-descrs, categories [g-n]*

Approved by:	portmgr blanket

Change Ada Framework foundation from gcc5-aux to gcc6-aux

GCC 6.1 was released this week.  The Ada Framework in FreeBSD ports has
been based on GCC 5.3 GNAT although GCC 6.x has been supported for awhile
via the ADA_DEFAULT option in make.conf.

Now that GCC 6 has been officially released, switch to it by default.
People can maintain the old foundation by putting "ADA_DEFAULT=5" in
/etc/make.conf.

Libraries built by one GNAT are unusable by another, so almost every Ada
port has been bumped as a result.  Noticable exceptions are dns/ironsides
which fails to build on gcc6 (thus USES=ada:5 is set) and cad/ghdl which
needs additional testing as it may require gcc5 on FreeBSD (DragonFly
uses the LLVM backend only).

Remove ${PORTSDIR}/ from dependencies, categories h, i, j, k, and l.

With hat:	portmgr
Sponsored by:	Absolight

lang/asis: Fix build for gcc6

The UET_Address attribute has been removed for gcc6.  It was intended for
internal use only, but it wasn't used.  Rather than apply this patch for
GCC6 only through the EXTRA_PATCHES mechanism, just unconditionally remove
the check regardless of gnat used to build it.  (It should not make any
difference).  No bump required.

Ada Framework: Switch to gcc5-aux, upgrade 6 packages at once

The transition from gcc-aux to gcc5-aux in the Ada framework has been
blocked by the inability to build gtkada3 and, once resolved, GPS (due
to tight locking with compiler).

A few days ago, Adacore made their annual release of their main libre
products, include GPS.  However, some products were tightly coupled with
the recent compilers, so in order to upgrade, the compiler had to be
switched and dependencies require many ports to be upgraded at once:

  * lang/asis
  * devel/gnatcoll
  * devel/gps
  * x11-toolkits/gtkada3

textproc/xmlada: Upgrade version 4.5.0.0 => 4.6.0.0, overhaul make system

Due to the unavailability of a public repository, this version uses
Adacores 2015 distribution of xmlada.  It's probably a minor update
from the previous one.

The major change, however, is the creation of a custom makefile to build
and install xmlada.  Why?  because gnatmake will lose the ability to
build project files in the near future, so xmlada makefiles were changed
to use gprbuild to build and itself it.  One problem: gprbuild needs
xmlada as a build dependency.  (and it also needs gprbuild to build
itself!!)  I could have chosen to keep using gnatmake, but I decided to
bite the bullet, fix it correctly now and not have to get stuck by it
by future versions of gnat that remove project management from gnatmake.

lang/asis: Fix build on gcc5-aux

The OpenVMS support was removed on gcc5's GNAT so the GPL 2014 version
of ASIS won't build unless the references to OpenVMS are removed.  Rather
than use EXTRA_PATCHES, just remove them unconditionally.  This doesn't
cause any issue for gcc-aux-built ASIS and the ports that use it.

Remove @dirrm from 10 of my lang ports

The majority of these ports had generated plists, not static ones.

lang/asis: Upgrade version 2013 => 2014

The annual Adacore release happened!

lang/asis: Remove obsolete passage about ASIS 2012/2013 in pkg-descr

lang/asis: New version as result of gcc-aux upgrade to gcc49

The ASIS source has to be matched with the compiler source of the compiler
that builds it.  ASIS is always tricky because it's matched to annual
releases of GNAT GPL, and never to GNAT FSF.  However, after disabling the
useless (and faulty) strong version check, ASIS 2013 seems to work okay
with gcc49.  At least the two ports that use it seem to work ok.

Tie libgnat_util.a to libasis

Rather than specify gnat_util every time ASIS is a dependency, set it
as a library dependency for ASIS.  LIB_DEPENDS doesn't work because it
is a static library, so just manually add libgnat_util.a to BUILD_DEPENDS
and RUN_DEPENDS, then adjust 3 ports accordingly.

lang/asis: Fix licenses in PLIST

The post-install target was overwriting the licenses
which were already present in $TMPPLIST

reported-by: antoine

lang/asis: Specify LICENSE (GPLv2)

lang/asis: Convert to staging

Add NO_STAGE all over the place in preparation for the staging support (cat:
lang)

Add new port: lang/asis

This is ASIS, the Ada Semantic Interface Specification.
ASIS is tightly coupled with lang/gcc-aux and must be built with the same
sources.  For this reason, ASIS will not work with other Ada compilers,
including GNAT GPL (lang/gnat).

ASIS is a dependency of several upcoming Ada ports.

Approved by:	bapt (mentor)