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/liblbxutil/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Liblbxutil(Package):
+class Liblbxutil(AutotoolsPackage):
     """liblbxutil - Low Bandwith X extension (LBX) utility routines."""
 
     homepage = "http://cgit.freedesktop.org/xorg/lib/liblbxutil"
@@ -43,9 +43,3 @@ class Liblbxutil(Package):
     # undefined symbol: Xalloc
     # See https://bugs.freedesktop.org/show_bug.cgi?id=8421
     # Adding a dependency on libxdmcp and adding LIBS=-lXdmcp did not fix it
-
-    def install(self, spec, prefix):
-        configure('--prefix={0}'.format(prefix))
-
-        make()
-        make('install')