lang/gnat1?: gettext is always required

Ignore the portlint warning and always depends on gettext.
(See PR 277508)

PR:		295966
Reported by:	Robert William Vesterman

lang/gnat14: refresh previous assets

Remark: the asset for 14.2.0 on FreeBSD-13 / aarch64 is missing.

lang/gnat1[2-4]: Restore check-phase

lang/gnat12,13, and 14:
* After PR 294657, restore the testing target check-phase, move the if
  conditional on ${UID} != 0 below the GNAT Ports' internal _ marked
  variables, and drop bsd.port.options.mk, and terminate the Port with
  bsd.port.post.mk over bsd.port.mk
* Add fix for rpath (PR 292708)
* Move ${PIE_UNSAFE} to the correct block (portclippy)
* Move gettext-runtime from ${USES} to ${NLS_USES}
* Regroup internal variables and sort
* Remove ${EXTRACT_CMD} from aarch64 specific section syncing with the update
  to the Ports Mk infrastructure (D57295) which by default now uses
  LC_ALL=en_US.UTF-8 in the environment
* Sort ${GNU_CONFIGURE_PREFIX}
* Specific to GNAT-12, follow GNAT-13 and 14's use of ${MASTER_SITE_GCC}
  in ${MASTER_SITES}; sort the architecture specific ${PLIST_SUB} entries

 PR:		295872

 Co-authored-by:	Marcin Cieślak <saper@saper.info>

Reported by:	Sulev-Madis Silber

lang/gnat14: fix plist on aarch64

lang/gnat1?: fix build with GNU strip

After D55509 $STRIP_CMD has been set to GNU strip for these ports, and in some
cases this breaks, because GNU strip will refuse to strip non-writable files,
while LLVM strip is happy to (attempt to) strip them.

PR:		294657
Reported by:	kib@FreeBSD.org
Reviewed by:	kib@FreeBSD.org
Phabricator:	D55509
MFC after:	8 days

lang/gnat1.: fix fetching without previous asset

MFC after:	8 days

lang/gnat14: fix plist on i386

lang/gnat14: really update to 14.2.0

Next step: become the default ADA in the ports tree.

lang/gnat14: repocopy from lzng/gnat13