dirstate.walk: factor out directory traversal This function will be used in upcoming patches.

Added signature for changeset 2e2e9a0750f9

Added tag 3.3.3 for changeset 2e2e9a0750f9

i18n-pt_BR: synchronized with d09262d6ec23

tests: fix py2.4 glob for devel warnings

merge with stable

dirstate: fix order of initializing nf vs f Result of a bad merge.

treemanifest: make treemanifest.matches() faster By converting treemanifest.matches() into a recursively additivie operation, it becomes O(n). The old matches function made a copy of the entire manifest and deleted files that didn't match. With tree manifests, this was an O(n log n) operation because del() was O(log n). This change speeds up the command "hg status --rev .^ 'relglob:*.js' on the Mozilla repo, now taking 2.53s, down from 3.51s.

treemanifest: add treemanifest._isempty() During operations that involve building up a new manifest tree, it will be useful to be able to quickly check if a submanifest is empty, and if so, to avoid including it in the final tree. Doing this check lets us avoid creating treemanifest structures that contain any empty submanifests.

treemanifest: remove treemanifest._intersectfiles() In preparation for the optimization in the following commit, this commit removes treemanifest.matches()'s call to _intersectfiles(), and removes _intersectfiles() itself since it's unused at this point.