Fedora's config has over 11,000 repositories and the compiled config
file is over 20 MB in size. Although negligible on a server class
machine, on my laptop just parsing this file takes a good 2.5 seconds.
Even if you use GL_ALL_READ_ALL (see a couple of commits before this
one) to remove the overhead for 'read's, that's still a pretty big
overhead for writes. And GL_ALL_READ_ALL is not really a solution for
most people anyway.
With this commit, using GL_BIG_CONFIG adds another optimisation; see
doc/big-config.mkd for details (look for the word "split config" to find
the section that talks about it).
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Implementation notes:
- the check for GL_NO_CREATE_REPOS has moved *into* the loop (which it
completely bypassed earlier) so that write_1_compiled_conf can be
called on each item
This should hopefully be the final step in making wildrepos as close to
normal repos as possible. You can now do pretty much anything with them
that you can do with normal repos [1]
Implementation notes:
- compile puts out %groups into the compiled config file regardless of
GL_BIG_CONFIG because this feature needs it
- wild_repo_rights caches %groups because the part of the %groups hash
we care about will not change between calls in the same run
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[1] **except** use the full-blown config file syntax within the gl-perms
file :-) I don't plan to do that; it's too complicated! [2]
[2] yeah yeah I know -- famous last words!
