Backport "Fix crash in inside_main_func".

Backport fix for RHBZ 2177655. (Luis Machado)

Rebase to FSF GDB 13.1.
Update gdb-6.3-rh-testversion-20041202.patch.
Update gdb-6.3-bz140532-ppc-unwinding-test.patch.
Update gdb-6.6-buildid-locate.patch.
Update gdb-6.6-buildid-locate-rpm.patch.
Remove 'Recommends: ' line for gcc-gdb-plugin for BZ2149246.
Add 'define _lto_cflags ' to avoid ODR violations.

Tweak gdb-6.3-rh-testversion-20041202.patch so that $_gdb_major

Remove gdb-rhbz1398387-tab-crash-test.patch as that test didn't

NVR bump for failed build.

More tweaks to gdb-6.6-buildid-locate-rpm.patch, in which rpmTag

Backport upstream patch "gdb: call check_typedef at beginning of

Backport fix for problems associated with GCC 13's self-move warning.
Benedict Glaw)
Tweak gdb-6.6-buildid-locate-rpm.patch so that running GDB's configure

Backport replace deprecated distutils.sysconfig in python-config.

Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild

Backport upstream commits 38665d717a3 and c3efaf0afd9 to fix RHBZ

Remove gdb-6.6-buildid-locate-rpm-scl.patch and
bz601887-dwarf4-rh-test.patch.

Remove gdb-fortran-frame-string.patch, a version of this test has

Remove gdb-bfd-aliasing.patch.

Remove gdb-entryval-crash-1of3.patch, gdb-entryval-crash-2of3.patch,
entryval-crash-3of3.patch.