nexgb: post-merge fixups and cleanups

AUTHORS, CONTRIBUTORS: still useful, add people from git log, clean up.

LICENSE: Google doesn't really grant you shit anymore.  The EU doesn't
have software patents either, so it doesn't affect me directly.

README, doc.go: erase mentions of unmaintained xgbutil.

nexgb/Makefile

@@ -1,5 +1,5 @@
 # This Makefile is used by the developer. It is not needed in any way to build
-# a checkout of the XGB repository.
+# a checkout of the neXGB repository.
 # It will be useful, however, if you are hacking at the code generator.
 # i.e., after making a change to the code generator, run 'make' in the
 # xgb directory. This will build xgbgen and regenerate each sub-package.
@@ -14,7 +14,7 @@ ifndef XPROTO
 XPROTO=/usr/share/xcb
 endif
 
-# All of the XML files in my /usr/share/xcb directory EXCEPT XKB. -_-
+# All of the XML files in my /usr/share/xcb directory except XKB, Xinput, SYNC.
 # This is intended to build xgbgen and generate Go code for each supported
 # extension.
 all: build-xgbgen \
@@ -74,7 +74,3 @@ gofmt:
 	gofmt -w *.go xgbgen/*.go examples/*.go examples/*/*.go xproto/xproto_test.go
 	colcheck *.go xgbgen/*.go examples/*.go examples/*/*.go xproto/xproto_test.go
 
-push:
-	git push origin master
-	git push github master
-