check-code: support multiline matches like try/except/finally - match one pattern at a time against entire file - find line containing match - sort matches by line number

fix bad tag for 2.0-rc This tag was immediately stripped, but not before escaping onto the hg-stable mirror.

largefiles: use separate try/except and try/finally as needed for python2.4 cfccd3bee7b3 introduced a try/except/finally block, which breaks compatibility with python2.4

commands: use separate try/except and try/finally as needed for python2.4 62dc0e7ab092 introduced a try/except/finally block, which breaks compatibility with python2.4

Added signature for changeset fccd350acf79

Added tag 2.0-rc for changeset fccd350acf79

Added signature for changeset 384082750f2c

Added tag 2.0-rc for changeset 384082750f2c

merge default into stable for 2.0 code freeze

rebase: simplify check for orphaned descendants