revset: rename tagged() to tag() and allow it to take an optional tag name

bookmarks: add revset for referencing bookmarks

hgweb help: fix double help links

tests: add testcase for --config format.dotencode=false

fetch: fix and document exit codes (issue2356)

doc: add [format] dotencode description

filectx: use ctx.size comparisons to speed up ctx.cmp Comparing sizes is cheaper than comparing file contents, as it does not involve reading the file on disk or from the filelog. It is however not always possible: some extensions, or encode filters, change data when extracting it to the working directory.

localrepo: use propertycaches to access encode/decode filters

localrepo: load filter patterns outside of _filter

localrepo: have _loadfilter return the loaded filter patterns

merge with mpm

wireproto/http: drain the incoming bundle in case of errors