Package all of Xorg/X11/XCB (#1740)

* Updates to Mesa and other Xorg packages

* Add packages for all Xorg Protocol extensions

* Add packages for first half of Xorg libraries

* Add packages for remaining Xorg libraries

* Add packages for all Xorg utilities

* Add packages for Xorg documentation tools

* Add build deps to Xorg protocol headers

* Add packages for XCB

* Add build deps to Xorg libraries

* Add build deps to Xorg utilities

* Add packages for Xorg fonts and font-related utilities

* Change font deptype from build to default

I wasn't sure which deptype was appropriate at first since none of
the packages are actually linked together. I initially chose the
build deptype for this reason. However, the font packages don't
install into their own prefix. They install into font-config. If
font-config is a build dependency, that means you can uninstall it
without uninstalling the font packages, which wouldn't make sense
since they install into font-config. So I switched them back to
the default deptype.

* Minor formatting changes to ncview

* Add half-way done xorg-server package

* Add packages for Xorg test suites, not yet tested!

* Add packages for Xorg data

* Add first quarter of Xorg apps

* Add more packages for Xorg apps

* Add dependencies to mesa

* Remove comments from mesa package

* Flake8

* Add more packages for Xorg apps

* Add more packages for Xorg apps

* Add more packages for Xorg apps

* Add more packages for Xorg apps

* Add more packages for Xorg apps

* Add package for Sublime Text

* Add packages for remaining Xorg apps

* Revisit testing packages, add missing dependencies

* Add dependencies, clean up FIXMEs

var/spack/repos/builtin/packages/xcb-proto/package.py

@@ -26,15 +26,19 @@
 
 
 class XcbProto(Package):
-    """Protocol for libxcb"""
+    """xcb-proto provides the XML-XCB protocol descriptions that libxcb uses to
+    generate the majority of its code and API."""
 
     homepage = "http://xcb.freedesktop.org/"
     url      = "http://xcb.freedesktop.org/dist/xcb-proto-1.11.tar.gz"
 
+    version('1.12', '5ee1ec124ea8d56bd9e83b8e9e0b84c4')
     version('1.11', 'c8c6cb72c84f58270f4db1f39607f66a')
 
-    def install(self, spec, prefix):
-        configure("--prefix=%s" % prefix)
+    extends('python')
 
-        make()
-        make("install")
+    def install(self, spec, prefix):
+        configure('--prefix={0}'.format(prefix))
+
+        # make('check')  # fails xmllint validation
+        make('install')