x11/xorgproto: update to 2019.1

Update x11/xorgproto to 2019.1

This release contains cleanups and and a few new keysyms. No functional
changes to any protocols.

Big thanks to antoine and portmgr for help with the exp-run!

Changelog:
https://lists.x.org/archives/xorg-announce/2019-June/003000.html

PR: 238728 (exp-run)
exp-run by: antoine
Sponsored by: B3 Init (zeising)