merge with mainline

add --plain option to patchbomb. this omits the hg patch headers. it makes a patchbomb email look like a regular email with a patch.

make patchbomb work with recent changes to export

strictly adher to 80 chars per line

Error handling for unbundle, fix option line wrapping

add --update support to 'hg unbundle'

remove the gpg stuff from hgeditor (superseded by the signing extension) remove the gpg stuff from hgeditor, update the comments to make it clear it can be used to show a diff while commiting

cleanup of revlog.group when repository is local revlog.group cached every chunk from the revlog, the behaviour was needed to minimize the roundtrip with old-http. We now cache the revlog data ~4MB at a time. The memory used server side when pulling goes down to 35Mo maximum whereas without the patch more than 160Mo was used when cloning the linux kernel repository. The time used by cloning is higher mainly because of the check in revlog.revision. before 110.25user 20.90system 2:52.00elapsed 76%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+708707minor)pagefaults 0swaps after 117.56user 18.86system 2:50.43elapsed 80%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (0major+748366minor)pagefaults 0swaps

remove a duplicate check in commit / fix a bug when merging files followed by revert

fix 'hg tag <tagname> <revision> - fix a collision with the option keyword rev and the option name - update the tests