Merged from trunk 6889:6917

   Merged from trunk 6889:6917

   +------------------------------------------------------------------------+
   | 6889     | Make the progress bar percentage indicator stop at 100%     |
   | zmedico  | instead of just 99%.                                        |
   |----------+-------------------------------------------------------------|
   | 6890     | Use the the optparse options for --ignore-default-opts      |
   | zmedico  | since that allows option abreviation to work.               |
   |----------+-------------------------------------------------------------|
   | 6892     | Add an --ignore-default-opts option that is analogous to    |
   | zmedico  | the corresponding emerge option.                            |
   |----------+-------------------------------------------------------------|
   | 6894     | In dblink._security_check(), use os.path.realpath to make   |
   | zmedico  | sure that the same path isn't counted twice.                |
   |----------+-------------------------------------------------------------|
   | 6896     | as noted by Josh Saddler on the gentoo-dev mailing list,    |
   | SpankMan | issue a warning if we try to create a binpkg for something  |
   |          | that has IUSE=bindist but was emerged with USE=-bindist     |
   |----------+-------------------------------------------------------------|
   | 6897     | Make IUSE handling safe for IUSE defaults.                  |
   | zmedico  |                                                             |
   |----------+-------------------------------------------------------------|
   | 6907     | Don't call digraph.hasallzeros() in --resume mode because   |
   | zmedico  | the digraph isn't currently populated in that case.         |
   |----------+-------------------------------------------------------------|
   | 6909     | Don't generate a list of keys for a containment test.       |
   | zmedico  |                                                             |
   |----------+-------------------------------------------------------------|
   | 6911     | Remove lots of unnecessary list generation via dict.keys(). |
   | zmedico  |                                                             |
   |----------+-------------------------------------------------------------|
   | 6912     | Remove more unnecessary list generation.                    |
   | zmedico  |                                                             |
   |----------+-------------------------------------------------------------|
   | 6913     | Remove more unnecessary list generation.                    |
   | zmedico  |                                                             |
   |----------+-------------------------------------------------------------|
   | 6914     | Implement UserConfigKlass.__iter__() so that tests pass.    |
   | zmedico  |                                                             |
   |----------+-------------------------------------------------------------|
   | 6915     | Fix the test so that it can run inside a sandbox.           |
   | zmedico  |                                                             |
   |----------+-------------------------------------------------------------|
   | 6916     | Implement config.has_key() on top of __contains__ instead   |
   | zmedico  | of vice versa.                                              |
   |----------+-------------------------------------------------------------|
   | 6917     | Autodetect if sandbox is active in order to prevent         |
   | zmedico  | recursive sandbox invocation. Thanks to Brian Harring for   |
   |          | the suggestion.                                             |
   +------------------------------------------------------------------------+

svn path=/main/branches/prefix/; revision=6944