With glibc-2.41 several gnulib tests are failing on the Hurd in multiple core packages
- test-once1
- test-pthread_sigmask1
- test-symlink/test-symlinkat
This adds the relevant patches from glibc upstream or the version from the
debian glibc adapted for glibc 2.41.
* gnu/packages/patches/glibc-hurd-2.41-pthread-once.patch: New patch.
* gnu/packages/patches/glibc-hurd-2.41-pthread-sigmask.patch: New patch.
* gnu/packages/patches/glibc-hurd-2.41-symlink.patch: New patch.
* gnu/packages/base.scm (glibc/hurd): Add them.
* gnu/local.mk : Register them.
Change-Id: I90ec984757da54ebbc7cb7817de00f2876f4a81a
