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/zsh/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Zsh(Package):
+class Zsh(AutotoolsPackage):
     """Zsh is a shell designed for interactive use, although it is also a
     powerful scripting language. Many of the useful features of bash, ksh, and
     tcsh were incorporated into zsh; many original features were added.
@@ -37,9 +37,3 @@ class Zsh(Package):
     version('5.1.1', checksum='8ba28a9ef82e40c3a271602f18343b2f')
 
     depends_on("pcre")
-
-    def install(self, spec, prefix):
-        configure('--prefix=%s' % prefix)
-
-        make()
-        make("install")