Merge topic 'FindX11-even-more-xcb-components'

65ade59835 FindX11: Remove HAS_X11_xcb check from xcb tests
b1b7298b17 FindX11: Fix typo bug, xvmc -> xv
922a97f38a FindX11: Add tests for newly added xcb libraries
7a2b02e000 FindX11: Fix existing tests
9d21d115c6 FindX11: Add more components to FindX11 tests
858fd8ece8 FindX11: Add many new xcb modules
45c3831369 FindX11: Arrange xcb modules in proper alphabetical order
a0d8556bf7 FindX11: Change find_path search string for Xaw

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !8366