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/xts/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Xts(Package):
+class Xts(AutotoolsPackage):
     """This is a revamped version of X Test Suite (XTS) which removes some of
     the ugliness of building and running the tests."""
 
@@ -50,11 +50,5 @@ class Xts(Package):
     depends_on('xset', type='build')
     depends_on('xdpyinfo', type='build')
 
-    def install(self, spec, prefix):
-        configure('--prefix={0}'.format(prefix))
-
-        # FIXME: Crashes during compilation
-        # error: redeclaration of enumerator 'XawChainTop'
-
-        make()
-        make('install')
+    # FIXME: Crashes during compilation
+    # error: redeclaration of enumerator 'XawChainTop'