Add pre-built binaries glib, google_cloud_sdk, kbfsgit, ldc and pcre2

* Update xcb_proto.rb

Remove python27 depedency. I have tested it without python27 on a fresh crew. It also works.  Python27 is only a optional package, see http://www.linuxfromscratch.org/blfs/view/svn/x/xcb-proto.html

* Update xcb_proto.rb

* Update xcb_proto.rb

Yes, I understand completely.  Let's try and fix the python binaries then. :)

* Create xf86dgaproto.rb

* Update xf86dgaproto.rb

Add some xorg protocols

* Create libxinerama.rb

* Update libxinerama.rb

* Create perl_sgmls.rb

* Update perl_sgmls.rb

* Update perl_sgmls.rb

* Create perl_text_wrapi18n.rb

* Update perl_text_wrapi18n.rb

* Create graphviz.rb

* Update graphviz.rb

* Update graphviz.rb

Fix it

* Update graphviz.rb

* Update graphviz.rb

* Create gtkvte.rb

* Update gtkvte.rb

Add vala language

* Create libsigcplucpluc.rb

* Update libsigcplucpluc.rb

Correct information

* Create libxrender.rb

Graphviz needs this library to compile.

* Update libxrender.rb

Create xcb_util_renderutil.rb

Update google_cloud_sdk.rb

Add gusb

Create pcre2.rb

Upgrade glib from 2.52.3 to 2.54.3

Update yelp_tools.rb

Add pre-built binaries for bind, elinks, gnupg, kbfsfuse, keybase, mediainfo, pinentry and zip

Add pre-built binaries a-x

Fix dependency

glib >=2.54.0 is required to build gobject_introspection