Log Message:
libXpm: update to 3.5.16.

Alan Coopersmith (11):
      test: skip compressed file tests when --disable-open-zfile is used
      gitlab CI: build with each of --enable-open-zfile & --disable-open-zfile
      configure: correct error message to suggest --disable-open-zfile
      open-zfile: Make compress & uncompress commands optional
      Require LT_INIT from libtool 2 instead of deprecated AC_PROG_LIBTOOL
      XpmCreateDataFromXpmImage: Fix misleading indentation
      parse.c: Wrap FREE_CIDX definition in do { ... } while(0)
      parse.c: remove unused function xstrlcpy()
      test: Use PACKAGE_BUGREPORT instead of hard-coded URL's
      test: Add simple test cases for functions in src/rgb.c
      xpmReadRgbNames: constify filename argument

Matt Turner (1):
      libXpm 3.5.16

Peter Hutterer (1):
      Fix a memleak in ParsePixels error code path