popt: update to 1.19.

Changes from popt 1.18

    Clarify license: we are not the X Consortium, use straight MIT license text
    Fix build without glob_pattern_p()
    Fix missing libiconv dependency for static linkage in popt.pc
    Fix segfault regression when NLS is enabled but libintl.h cannot be found (#32 )
    Fix the handling of superfluous args passed with =
    Fix iconv resource leak on errors
    Fix POPT_CONTEXT_KEEP_FIRST handling in poptResetContext()
    Fix '=' getting shown for short options
    Fix memory corruption issues with poptStuffArgs()
    Fix handling of large files in poptReadFile() on 32bit systems
    Fix build without wchar / mbstate_t
    Fix potential memory leak in poptReadConfigFile()
    Fix "Usage" string calculated length
    Fix memory leak regressions in popt 1.18
    Add --enable-werror configure option
    Add CREDITS file
    Improve random number handling
    Various code cleanups, const and type hygiene improvements
    Adjust test-suite expectations for libtool changes
    Various translation updates
    Various documentation improvements
    Various test-suite improvements
    Appease autoconf 2.70
    Update gettext to 1.98.8
    Run CI on fixed Fedora version (36 for now), use stricter compiler settings
    Drop unmaintained CHANGES file from tarballs


(wiz)