Broken updates due to Classes living in .module files

I did a quick sanity check as to whether calling module_exists() outside of any hooks / functions in a .module file might cause problems.

Looks like it should be okay; the .module file will typically be loaded by module_load_all() from drupal_bootstrap_full() which means that module_list() will already have warmed its static cache.

It looks like the test failure for #59 is down to a problem with the module's tests under sqlite rather than anything related to this patch; I'll have a look at that separately.

So I think #59 looks good to be committed.

Automatically closed - issue fixed for 2 weeks with no activity.