xorgproto: update to 2019.1.

This release boasts a bunch of cleanup work and a few new keysyms. No
functional changes to any of the protocols.

Adam Jackson (3):
      randrproto: Fix missing #undef RRLease
      Remove COPYING-panoramixproto
      composite: Fix the documentation for the unredirection requests

Alan Coopersmith (9):
      Remove trailing whitespace from header files
      Remove the use of no-op B16 & B32 bitfield macros in headers
      Assorted typo fixes in headers
      Update README for gitlab migration
      Update configure.ac bug URL for gitlab migration
      Combine *_EXTRA_DIST into EXTRA_DIST in Makefile.am
      keysymdef.h: Update repo info in comments
      Update URLs for protocol specs to use xorgproto repo now
      Restore generation of specs from docbook in autotools builds

Hans de Goede (1):
      XF86keysym: Add XF86XK_RotationLockToggle

Jeremy Puhlman (1):
      Remove libdir from pc files.

Jian-Hong Pan (1):
      XF86keysym: Add XF86XK_MonBrightnessCycle

Jon Turney (1):
      .gitignore more autotools artifacts

Julien Cristau (3):
      PROXY_MANAGEMENT, DEC-XTRAP and XFree86-Misc are legacy
      Fix MAN_SUBSTS libdir replacements
      Remove more build files

Keith Packard (1):
      screensaver: Fix encoding of ScreenSaverSuspend 'suspend' element

Matthieu Herrb (1):
      Remove RCS Ids

Peter Hutterer (2):
      Fix comment for XK_Ocaron
      xorgproto 2019.1

Roman Kapl (1):
      Improve the ButtonInfo description.

Thomas E. Dickey (1):
      Update Xalloca.h to reduce compiler warnings:

(wiz)