merge: move reverse-merge logic out of filemerge (issue2342)

bisect: add test for unrelated starting revisions

merge with stable

bisect: better message for unrelated starting revisions

debuginstall: report installpath

tests: unify test-glog

bookmarks: fix long line

merge with stable

revlog: addgroup re-adds punched revisions for missing parents While reading changegroup if a node with missing parents is encountered, we add a punched entry in the index with null parents for the missing parent node.

revlog: generate full revisions when parent node is missing The full revision is sent if the first parent, against which diff is calculated, is missing at remote. This happens in the case of shallow clones.

revlog.revision(): inline deltachain computation

revlog.revision(): remove debug code

revlog.revision(): don't use nullrev as the default value for the cache I is probably a bug if the deltachain computation think there was a cache hit at nullrev. Use None instead, this will never trigger a cache hit.

revlog.revision(): minor cleanup Rename some variables, making the name more obvious (in particular "cache" was actually two different variable. Move code around, moving the index preloading before the deltachain computation, without that index preloading was useless (everything was read in deltachain).

bookmarks: Check if the bookmark to delete exists on the remote