Changes

populate wdotap patches for gcc-13 #1028094

initialize GCC_VER before using it

Fixes: 5dc33e116f43 ("populate wdotap patches for gcc-13 #1028094")
Reported-by: Wookey <wookey@debian.org>

update multiarch tuple for loong64 #1028654

port LIMITS_H_TEST patch to gcc-13

drop dpkg-genbuildinfo workaround #1025273 fixed in dpkg/1.21.11

diffutils: Add loong64 support #1029275

Signed-off-by: Han Gao <gaohan@iscas.ac.cn>
Signed-off-by: Helmut Grohne <helmut@subdivi.de>

allow cross building perl

perl is doing it very wrong in that it collects configure results for
all the architectures, but it also is quite reliable in doing so. So
accept that downside and go for perl finally.

perl misses a dependency on libcrypt-dev #1029753

drop gcc-13 support #1028094 fixed in cross-gcc-dev/247

revert automatic perl

While perl has lots of cross configs, it misses them for quite a few
architectures e.g. arc, mips, mips64. I suspect that musl-linux-any is
also missing. We need to find a different solution for perl.

fix apt FTBFS with gcc-13 #1030592

drop FTCBFS patch #1027126 fixed in libzstd/1.5.2+dfsg2-3

drop FTCBFS patch #1028184 fixed in linux/6.1.7-1

drop gcc-13 FTBFS patch #1030592 applied in apt/2.5.6

prefer matching the libc using dpkg-architecture rather than our LIBC_NAME

revert the loong64 tuple to the previous value

confine the use of LIBC_NAME to a small code section

fix libbsd musl FTBFS #1032159

add back musl bash patch #1023053 - improperly applied

add a buildenv_glibc hook

The glibc build instructions are quite hard wired, but we can make it a
little more uniform with the rest of the script by moving
DEB_GCC_VERSION into a buildenv hook.

fix libffi symbols on loong64 #1024359

Thanks to Dandan Zhang <zhangdandan@loongson.cn> for diagnosis, report
and patch.

drop musl patch #989688 fixed in bsdmainutils/12.1.8

drop loong64 patch #1028654 re-applied in dpkg/1.21.21

Bad argument for dpkg-architecture "-a$1"

Error message:
dpkg-architecture: error: unknown Debian architecture HOST_ARCH=amd64, you must specify GNU system type, too

drop mpdecimal

Since python3.11, an internal mpdecimal is used, so we don't have to
build it externally anymore.

Reported-by: Henry N. <henrynmail-debian@yahoo.com>

drop loong64 patch #1029275 applied in diffutils/1:3.8-4

make glibc -Wno-error patch upstreamable

fix evaluation of unset variable

Fixes: daaab72fe59c ("make glibc -Wno-error patch upstreamable")

cherry-pick guile-3.0 cross patch for loong64 #1024295

Thanks to zhangdandan@loongson.cn for doing all the background work.