Description of problem:
Flask tries to import jinja2, fails, and raises an ImportError.

Version-Release number of selected component (if applicable):
0.9-5.el6

How reproducible:
Always

Steps to Reproduce:
1. Install python-flask on a clean system
2. At a Python prompt, "import flask"

Actual results:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.6/site-packages/flask/__init__.py", line 19, in <module>
    from jinja2 import Markup, escape
ImportError: No module named jinja2

Expected results:
Import succeeds.

Additional info:
On EPEL 6, python-flask depends on python-jinja2-26 but not python-jinja.  python-jinja2-26 intentionally does not install itself into the Python path (see bug 1004384).