pixman: Update to version 0.43.4

pixman: Update to version 0.43.4

- Update from version 0.43.0 to 0.43.4
- Update of rootfile
- Changelog
    0.43.4
	      Revert the changes to fix the problem in big-endian architectures
	      Allow to build pixman on clang/arm32
	      pixman-arm: Fix build on clang/arm32
	      pixman-x86: Use cpuid.h header
	      pixman-x86: Move #include "cpuid.h" inside conditionals
	      Revert "Allow to build pixman on clang/arm32"
	      pixman-arm: Use unified syntax
    0.43.2
	Note, in the past pixman used a numbering scheme with odd minor number
	numbers for development versions and even minor number for stable
	versions. This is no longer the case, all releases (including this one)
	are stable production versions now.
	      Drop automatic DEBUG define
	      Drop ChangeLog
	      Drop contrib/ci.sh

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>