convert: add bookmark support to main command During conversion, read bookmarks from source repo, filter them and push the resulting set of bookmarks to destination sink.

convert: add bookmark support to common sink/source implementation

dirstate: reset _lastnormal and _lastnormaltime on write, invalidate, and clear

discovery: avoid discovery when local graph is a subset of remote Immediately sends local's heads to the server to check whether the server knows them all. If it does, we can call getbundle immediately. Interesting test output changes are: - added 1 changesets with 0 changes to 1 files (+1 heads) + added 1 changesets with 0 changes to 0 files (+1 heads) -> The new getbundle() actually fixes a bug vs. changegroupsubset() in that it no longer returns unnecessary files when file revs are reused. warning: repository is unrelated + requesting all changes -> The new use of common instead of bases correctly indicates that an unrelated pull gets all changes from the server.

wireproto: add getbundle() function getbundle(common, heads) -> bundle Returns the changegroup for all ancestors of heads which are not ancestors of common. For both sets, the heads are included in the set. Intended to eventually supercede changegroupsubset and changegroup. Uses heads of common region to exclude unwanted changesets instead of bases of desired region, which is more useful and easier to implement. Designed to be extensible with new optional arguments (which will have to be guarded by corresponding capabilities).

merge with stable