Changes

linux: stop using the stage1 profile

fix readline multilib dependencies for 64bit

avoid dpkg-cross failing on packages that we don't use

drop sparc patch #1034779 applied in pcre2 #10.42-2

fix pam FTBFS #1054228

drop bogus pam FTBFS patch #1054228

The patch actually causes no patches to be applied. pam has been fixed
by other means in the mean time.

debhelper also truncates NEWS now - causing differences

fix /usr-merge induced e2fsprogs FTBFS #1053111

fix dash FTCBFS #1057339

fix icu FTCBFS #1057726

fix pam FTCBFS #1057729

work around elf-arch only recognizing some mips64r6el binaries

drop loong64 patch #1024359 applied in libffi/3.4.4-2

drop loong64 patch #1031850 resolved in gcc-13

adapt to linux-libc-dev having become a:all+m-a:foreign

Most of the time, we no longer have to rebuild linux-libc-dev.
Sometimes, it's missing headers though and then we need to rebuild it,
but not as a cross build, but an indep-only build.

linux: circumvent control generation protection more reliably