configure uses inconsistent descriptions of virtualenv options.

ac_user_opts='
enable_option_checking
with_python3
with_virtualenv

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-python3          Set up to use Python 3 by default.
  --without-virtualenv    install to a Python virtualenv

Installing latest master, I don't get a bin/gmg executable.

~ $ mkdir mediagoblin-0.8.0
~ $ cd mediagoblin-0.8.0/
~/mediagoblin-0.8.0 $ git clone https://gitorious.org/mediagoblin/mediagoblin.git .
~/mediagoblin-0.8.0 $ virtualenv2 --system-site-packages .
~/mediagoblin-0.8.0 $ source bin/activate
(mediagoblin-0.8.0) ~/mediagoblin-0.8.0 $ ./bootstrap.sh
(mediagoblin-0.8.0) ~/mediagoblin-0.8.0 $ ./configure --without-virtualenv
(mediagoblin-0.8.0) ~/mediagoblin-0.8.0 $ make
(mediagoblin-0.8.0) ~/mediagoblin-0.8.0 $ bin/gmg dbupdate
-bash: bin/gmg: No such file or directory
(mediagoblin-0.8.0) ~/mediagoblin-0.8.0 $ find bin/
bin/
bin/activate.csh
bin/pip2
bin/pybabel
bin/pip2.7
bin/activate.fish
bin/activate
bin/easy_install
bin/activate_this.py
bin/easy_install-2.7
bin/pip
bin/python2
bin/python
bin/python2.7

Trying to compile latest master gives the following pybabel errors.

(mediagoblin-0.8.0) ~/mediagoblin-0.8.0 $ make
./devtools/compile_translations.sh
...
error: mediagoblin/i18n/ca/mediagoblin.po:399: positional format placeholders are unbalanced
...
Skipping mediagoblin/i18n/templates/en/mediagoblin.po which pybabel can't compile :(
Skipping mediagoblin/i18n/jbo/mediagoblin.po which pybabel can't compile :(
...