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/gccmakedep/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Gccmakedep(Package):
+class Gccmakedep(AutotoolsPackage):
     """X.org gccmakedep utilities."""
 
     homepage = "https://cgit.freedesktop.org/xorg/util/gccmakedep/"
@@ -34,9 +34,3 @@ class Gccmakedep(Package):
     version('1.0.3', '127ddb6131eb4a56fdf6644a63ade788')
 
     depends_on('pkg-config@0.9.0:', type='build')
-
-    def install(self, spec, prefix):
-        configure('--prefix={0}'.format(prefix))
-
-        make()
-        make('install')