* gnu/packages/patches/xcb-proto-python3-print.patch,
gnu/packages/patches/xcb-proto-python3-whitespace.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.
* gnu/packages/xorg.scm (xcb-proto): Update to 1.12.
[source]: Use patches. Download from new home.
[home-page]: Change to new xcb.fd.o home.
