GitLab

Give a Bad request error if this doesn't look like a valid query
string, and if people try to search for key:*, rewrite it to [* TO *]
to work around solr limitation.

Conflicts:

	chef-server-api/app/controllers/cookbooks.rb
	features/api/cookbooks/upload_cookbooks.feature

Ticket:if CHEF-2129

* Fixes CHEF-2212 installing rubygems 1.3.7 from source.
* Also clean up whitespace and default node name comments

Conflicts:

	chef/lib/chef/knife.rb

implemented exponential backoff for 503s. Uses hardcoded 2s base because
5s (current default) is too much, but I don't want to modify the
constant time retry logic used for other types of errors

* load custom http headers from config

* Workaround marshal errors w/ moneta by deleting 0byte files in the
  checksum cache dir
* Assumes you're using the BasicFile backend to moneta.
* even though every file is checked, total time should be negligable,
  and this approach avoids depending too much on moneta's implementation

also, log a more helpful error if loading fails