Massive conversion from Package to AutotoolsPackage (#2845)

* Massive conversion from Package to AutotoolsPackage

* Forgot to convert p4est to AutotoolsPackage

* Fix typo

* Fix broken link in docs

var/spack/repos/builtin/packages/xf86rushproto/package.py

@@ -25,15 +25,10 @@
 from spack import *
 
 
-class Xf86rushproto(Package):
+class Xf86rushproto(AutotoolsPackage):
     """X.org XF86RushProto protocol headers."""
 
     homepage = "https://cgit.freedesktop.org/xorg/proto/xf86rushproto"
     url      = "https://www.x.org/archive/individual/proto/xf86rushproto-1.1.2.tar.gz"
 
     version('1.1.2', '6a6389473332ace01146cccfef228576')
-
-    def install(self, spec, prefix):
-        configure('--prefix={0}'.format(prefix))
-
-        make('install')