Add py-csvkit package

This adds the py-csvkit package and needed dependencies for working with
csv files.

var/spack/repos/builtin/packages/py-SQLAlchemy/package.py

@@ -0,0 +1,15 @@
+from spack import *
+
+class PySqlalchemy(Package):
+    """
+    The Python SQL Toolkit and Object Relational Mapper
+    """
+    homepage = 'http://www.sqlalchemy.org/'
+    url      = "https://pypi.python.org/packages/source/S/SQLAlchemy/SQLAlchemy-1.0.12.tar.gz"
+
+    version('1.0.12', '6d19ef29883bbebdcac6613cf391cac4')
+
+    extends('python')
+
+    def install(self, spec, prefix):
+        python('setup.py', 'install', '--prefix=%s' % prefix)