lang/gnat12: fix previous commit

In 5d276ab3adc9 distinfo was missing.

Reported by:	Alastair Hogge <agh (at) riseup.net>

lang/gnat12: fix ASSETS

lang/gnat12: adding assets for FreeBSD-15

And since I’m there refresh the other versions.

Remark: no package is available ATM for FreeBSD-12 on aarch64, it is why
        gcc6-aux is still the default.

lang/gnat12: Makefile maintenance

* Move gettext-runtime to NLS helper, including pkg-plist updates;
* Prefix all custom variable with an underscore
* Sort Makefile Blocks into correct order; this meant breaking down the
  one if conditional covering MULTILIB into multiple conditionals spread
  between each Block
* Remove ${INFOS}; this was probably meant to be ${INFO}. The Info pages
  are removed later in the post-stage target, so there is no point
  defining any.
* No need to define ${GNU_CONFIGURE_MANPREFIX}, the Ports framework
  inherits this from ${MANPREFIX}, which is also defined in the port Makefile
* Explicitly enable C++ language to GNU configure; GNAT requires a
  working C++ toolchain to build itself
* Move to bsd.port.options.mk/bsd.port.mk Makefile inclusion pair
* Prefer ${DISTVERION} over ${PORTVERSION}
* Remove @ from some Makefile ${COMMANDS} to prefer verbose build output

PR:		274619
Approved by:	/me

lang/gnat12: Add missing binutils RUN_DEPENDS and fix broken library search
paths

Any produce binary of the gnat12 Ada compiler that had dependencies
on libstdc++ from this package would result in broken binaries
because no RUNPATH and no ldconfig paths were set up such that the
included libstdc++ would get found.

While we're at it, add the missing binutils dependency because the
compiler driver would find the GNU assembler that is hardcoded in
the Makefile.

PR:		274239
Signed-off-by:	Nico Sonack <nsonack@herrhotzenplotz.de>
Approved by:	thierry (maintainer timeout, two weeks)
MFH:		2023Q4

lang/gnat12: add MULTILIB support, fix build on missing 32-bit libraries

PR:		273648
Reported by:	Olivier Certner

*: Bump PORTREVISIONs for math/mpc update to 1.3.1

lang/gnat12: add an asset for FreeBSD-12 / i386

lang/gnat12: fix plist for aarch64 and add assets

Add assets for FreeBSD-12 / amd64 and FreeBSD-13 / aarch64

lang/gnat12: force rpath

When lang/gcc12 is also installed, the programs installed by gnat12 might
load libraries of gcc12. This could become problematic if these two ports
get different versions.

Modification inspired by lang/gcc6-aux/files/diff-core.

lang/gnat12: fix on arm64 and add an asset for FreeBSD-14 on i386

lang/gnat12: fix on i386 and add an asset for FreeBSD-13.1 / i386

lang/gnat12: remove programs suffix

Since GNAT is now installed in a specific prefix, we can simplify by
removing the programs suffix: this will avoid the usage of binary
aliases, only setting the PATH is necessary.

lang/gnat12: install in a separate directory with its own gcc

Gnat runs along with a gcc compiled with Ada, but we don’t want neither
modify lang/gcc12 nor conflict with it. Therefore we have to install it
in a separate directory.

lang/gnat12: mark IGNORE for the moment

Sorry, I made a mistake: it only works on my machines because it needs
gcc12 built from this port! gcc12 from lang/gcc12 is not sufficient.

lang/gnat12: adding GNAT from Gcc-12

This Ada compiler is built from Gcc-12, with help from Stephane Carrez
(Ada France).

The first time it uses lang/gcc6-aux as a bootstrap, but it can produce
a bootstrap for the next time, either for this version or for the next
ones.

Yet to be done:
- plug it into Mk/Uses/ada.mk
- build more bootstrapping assets
  (ATM they exist only for amd64 on FreeBSD 13 and 14)
- add a test target
- try to cross-compile for more platforms?