Log Message:
Update to 7.3.0:

7.3.0:
Here's a stable xextproto to go along with Xserver 1.15

Keith Packard (1):
      Bump release to 7.3

7.2.99.901:
Here's a release of xextproto that includes the new MIT-SHM requests

Adam Jackson (1):
      configure: Remove AM_MAINTAINER_MODE

Colin Walters (1):
      autogen.sh: Implement GNOME Build API

Gaetan Nadon (1):
      config: replace deprecated use of AC_OUTPUT with AC_CONFIG_FILES

Keith Packard (2):
      Adds MIT-SHM AttachFd and CreateSegment requests
      Bump version to 7.2.99.901 (7.3 RC1)