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/proj/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Proj(Package):
+class Proj(AutotoolsPackage):
     """Cartographic Projections"""
     homepage = "https://github.com/OSGeo/proj.4/wiki"
     url      = "http://download.osgeo.org/proj/proj-4.9.2.tar.gz"
@@ -35,11 +35,3 @@ class Proj(Package):
     version('4.8.0', 'd815838c92a29179298c126effbb1537')
     version('4.7.0', '927d34623b52e0209ba2bfcca18fe8cd')
     version('4.6.1', '7dbaab8431ad50c25669fd3fb28dc493')
-
-    # No dependencies
-
-    def install(self, spec, prefix):
-        configure('--prefix=%s' % prefix)
-
-        make()
-        make("install")