meson: Add meson build support

This does everything the autotools build does except muck with your git
config. It does so much faster, and has an "ext_glproto" dependency that
is meant to be used with meson's wrap capability.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>

meson.build

@@ -0,0 +1,42 @@
+# Copyright © 2017 Intel Corporation
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+project('glproto', license : 'MIT', version : '1.4.17')
+
+install_headers(
+  'include/GL/glxint.h',
+  'include/GL/glxmd.h',
+  'include/GL/glxproto.h',
+  'include/GL/glxtokens.h',
+  subdir : 'GL')
+install_headers('include/GL/internal/glcore.h', subdir : 'GL/internal')
+
+pkg = import('pkgconfig')
+
+pkg.generate(
+  name : 'GLProto',
+  filebase : 'glproto',
+  description : 'GL extension headers',
+  version : meson.project_version(),
+)
+
+ext_glproto = declare_dependency(
+  include_directories : include_directories('include')
+)