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/setxkbmap/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Setxkbmap(Package):
+class Setxkbmap(AutotoolsPackage):
     """setxkbmap is an X11 client to change the keymaps in the X server for a
     specified keyboard to use the layout determined by the options listed
     on the command line."""
@@ -40,9 +40,3 @@ class Setxkbmap(Package):
 
     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')