Ensure that every file in Spack has a license (#2659)

* Ensure that every package has a license

Also fixes URLs with http://http:// doubled.

This is a continuation of #2656.

* Add license to every file in Spack

* Make sure Todd is the author of all packages

* Fix flake8 tests

* Don't license external Sphinx docs

* Don't display licenses in tutorial example packages

Also fixes typos and converts command-line examples
from tcsh to bash, which is more common

var/spack/repos/builtin/packages/cscope/package.py

@@ -25,18 +25,13 @@
 from spack import *
 
 
-class Cscope(Package):
+class Cscope(AutotoolsPackage):
     """Cscope is a developer's tool for browsing source code."""
-    homepage = "http://http://cscope.sourceforge.net/"
+
+    homepage = "http://cscope.sourceforge.net/"
     url      = "http://downloads.sourceforge.net/project/cscope/cscope/15.8b/cscope-15.8b.tar.gz"
 
     version('15.8b', '8f9409a238ee313a96f9f87fe0f3b176')
 
     # Can be configured to use flex (not necessary)
     # ./configure --with-flex
-
-    def install(self, spec, prefix):
-        configure('--prefix=%s' % prefix)
-
-        make()
-        make("install")