Auto-sync with upstream branch release/2.37/master
    
    Upstream commit: a704fd9a133bfb10510e18702f48a6a9c88dbbd5:
    
    - Create ChangeLog.old/ChangeLog.26. (tag: glibc-2.37)
    - Prepare for glibc 2.37 release.
    - x86: Fix strncat-avx2.S reading past length [BZ #30065]
    - Update install.texi, and regenerate INSTALL.
    - Update manual/contrib.texi.
    - Update NEWS file with bug fixes.
    - Regenerate configure.
    - Update all PO files in preparation for release.
    - doc: correct _FORTIFY_SOURCE doc in features.h
    - libio: Update number of written bytes in dprintf implementation
    
    - Drop already included glibc-dprintf-length.patch patch.
    - Apply glibc-printf-grouping-swbz30068.patch to fix swbz#30068.