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/libxxf86dga/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Libxxf86dga(Package):
+class Libxxf86dga(AutotoolsPackage):
     """libXxf86dga - Client library for the XFree86-DGA extension."""
 
     homepage = "http://cgit.freedesktop.org/xorg/lib/libXxf86dga"
@@ -41,9 +41,3 @@ class Libxxf86dga(Package):
     depends_on('xf86dgaproto@2.0.99.2:', type='build')
     depends_on('pkg-config@0.9.0:', type='build')
     depends_on('util-macros', type='build')
-
-    def install(self, spec, prefix):
-        configure('--prefix={0}'.format(prefix))
-
-        make()
-        make('install')