Fixed #14680 -- Added ignore files for Mercurial and Git.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15009 bcc190cf-cafb-0310-a4f2-bffc1f526a37

.gitignore

@@ -0,0 +1,4 @@
+*.egg-info
+*.pot
+*.py[co]
+docs/_build/

.hgignore

@@ -0,0 +1,6 @@
+syntax:glob
+
+*.egg-info
+*.pot
+*.py[co]
+docs/_build/