merge with stable

dirstate: avoid invalidating every entries when list is empty Default value was not tested with 'is None', this made empty list seen as default value and result the invalidation of every single entry in the dirstate. On repos with hundred of thousand of files, this results in minutes of lookup time instead nothing. This is a text book example of why we should test 'is None' if this is what we mean.

crecord: fix a typo introduced when moving crecord to core When moving crecord to core, I did a search an replace to remove all of the variable with caps letter. Doing so, I unfortunately changed the 'F' command to 'f' leading to two 'f' commands, one never used. This patch fixes this mistake and re enables the behavior of 'F'.

pull: prevent race condition in bookmark update when using -B (issue4689) We are already fetching remote bookmarks to honor the -B option, we now pass that data to the pull process so it can reuse it. This prevents a race condition between the initial looking and the actual pulling of changesets and bookmarks. Tests are updated to handle this fact.

pull: allow a generic way to pass parameters to the pull operation We have been feeling the need for this in extensions for quite some time. This will be used to pass remote bookmark information around in the next changesets.

pull: skip pulling remote bookmarks with bundle2 if a value already exists For efficiency and consistency purpose, remote bookmarks, retrieved at the time the pull command code is doing lookup, will be reused during the core pull operation. A second step toward this is to avoid requesting bookmark information in the bundle 2 if we already have them locally.

pull: skip pulling remote bookmarks with bundle1 if a value already exist For efficiency and consistency purpose, remote bookmarks, retrieved at the time the pull command code is doing lookup, will be reused during the core pull operation. A first step toward this is to setup the logic avoiding pulling the data again during the discovery phase if some have already been provided.

test: pull through http when testing for race conditions The http server is stateless giving more occasion for race. We switch the test to http before adding extra cases tests.

test: display pre-pull remote bookmark state when testing race condition This makes it easier to read the test. This will be usefull for comming changesets testing more race conditions.

largefiles: replace match.bad() monkey patching with match.badmatch() No known issues with the previous code since it restored the original method, but this is cleaner. The monkey patching in cat is harmless, because it is created locally, and doesn't pass it anywhere (subrepo cat isn't supported with largefiles).