- Update to version xorg-server-21.1.6:
* xserver 21.1.6
* Xext: fix invalid event type mask in XTestSwapFakeInput
* xkb: fix some possible memleaks in XkbGetKbdByName
* xkb: proof GetCountedString against request length attacks
* xquartz: Fix some formatting
* XQuartz: stub: Call LSOpenApplication instead of fork()/exec()
- drop the following upstream patches:
U_xkb-proof-GetCountedString-against-request-length-at.patch
U_xkb-fix-some-possible-memleaks-in-XkbGetKbdByName.patch

- Update to version xorg-server-21.1.5:
* xkb: reset the radio_groups pointer to NULL after freeing it
* Xi: avoid integer truncation in length check of ProcXIChangeProperty
* Xi: return an error from XI property changes if verification failed
* Xext: free the screen saver resource when replacing it
* Xext: free the XvRTVideoNotify when turning off from the same client
* Xi: disallow passive grabs with a detail > 255
* Xtest: disallow GenericEvents in XTestSwapFakeInput
* meson: Don't build COMPOSITE for XQuartz
* xquartz: Move default applications list outside of the main executable
* xquartz: Remove unused macro (X11LIBDIR)
- drop the following upstream patches:
U_0007-xkb-reset-the-radio_groups-pointer-to-NULL-after-fre.patch
U_0002-Xi-return-an-error-from-XI-property-changes-if-verif.patch
U_0003-Xi-avoid-integer-truncation-in-length-check-of-ProcX.patch
U_0004-Xi-disallow-passive-grabs-with-a-detail-255.patch
U_0005-Xext-free-the-screen-saver-resource-when-replacing-i.patch
U_0006-Xext-free-the-XvRTVideoNotify-when-turning-off-from-.patch
U_0001-Xtest-disallow-GenericEvents-in-XTestSwapFakeInput.patch