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/datamash/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Datamash(Package):
+class Datamash(AutotoolsPackage):
     """GNU datamash is a command-line program which performs basic numeric,
     textual and statistical operations on input textual data files.
     """
@@ -37,8 +37,3 @@ class Datamash(Package):
     version('1.0.7', '9f317bab07454032ba9c068e7f17b04b')
     version('1.0.6', 'ff26fdef0f343cb695cf1853e14a1a5b')
     version('1.0.5', '9a29549dc7feca49fdc5fab696614e11')
-
-    def install(self, spec, prefix):
-        configure('--prefix=%s' % prefix)
-        make()
-        make("install")