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/mpc/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Mpc(Package):
+class Mpc(AutotoolsPackage):
     """Gnu Mpc is a C library for the arithmetic of complex numbers
        with arbitrarily high precision and correct rounding of the
        result."""
@@ -40,11 +40,6 @@ class Mpc(Package):
 
     def url_for_version(self, version):
         if version < Version("1.0.1"):
-            return "http://www.multiprecision.org/mpc/download/mpc-%s.tar.gz" % version  # NOQA
+            return "http://www.multiprecision.org/mpc/download/mpc-%s.tar.gz" % version
         else:
             return "ftp://ftp.gnu.org/gnu/mpc/mpc-%s.tar.gz" % version
-
-    def install(self, spec, prefix):
-        configure("--prefix=%s" % prefix)
-        make()
-        make("install")