* Fix spelling/wording issues
* gitlab CI: add a basic build test
* Remove unnecessary casts from malloc & free calls
* Variable scope reduction as recommended by cppcheck
* Mark two dpy parameters const as suggested by cppcheck
* Quiet -Wconditional-uninitialized warnings from clang
* Resolve 36 of 40 -Wextra-semi-stmt warnings from clang
* Handle 63 of 63 -Wshorten-64-to-32 warnings from clang
* Handle 60 of 60 -Wimplicit-int-conversion warnings from clang
* Handle 6 of 9 -Wsign-conversion warnings from clang
* XFixesCloseDisplay: Mark codes as unused
* Require LT_INIT from libtool 2 instead of deprecated AC_PROG_LIBTOOL
* Remove "All rights reserved" from Oracle copyright notices
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/libXfixes?expand=0&rev=23
