libXcursor: update to 1.2.1.

This release provides bug fixes, code cleanups, and some significant
documentation improvements.

Alan Coopersmith (5):
      Convert COPYING from ISO-8859-1 to UTF-8
      Fix spelling/wording issues
      Build xz tarballs instead of bzip2
      gitlab CI: add a basic build test
      libXcursor 1.2.1

Thomas E. Dickey (31):
      quiet normal gcc warnings using casts (no object change)
      fix a missing initializer
      quiet warnings for unused parameters
      fix stricter gcc warnings by changing the type for the loop variable to
      fix stricter gcc warnings using casts
      fix stricter gcc warnings using casts
      add check in case the image size is 0x0
      amend that...
      document the other environment variables
      make the function-prototypes easier to read, by eliminating hyphenation and filling
      further formatting fixes.  added script to create/find ".so" files which are missing
      correct a prototype
      italicize parameter names, for readability
      improve explanation for functions which load images
      document the theme_core setter/getter functions
      document the library-attributes
      add see-also section
      document the cursor-load functions
      update ".so" links, and fix a special case for "const char *" in parsing function-names
      start on the animated cursors; fixup whitespace
      improve explanation of Xcursor's search algorithm
      document the animation support functions
      document the cursor-comments functions
      document the API called from libX11
      fix raggedy prototypes and structure declarations using tabstops in appropriate macros
      update copyright notice
      fix a typo and a style issue
      eliminate special escaping for "/*" which produces look-alike Unicode for
      mention "Inherits=" lists
      cppcheck style-fixes
      more cppcheck-style fixes

Tobias Stoeckmann (2):
      Handle more theme loop situations
      fix XcursorTheme loop regression

Valentin (2):
      Use fixed size integer type
      Fix undefined behavior


(wiz)