scmutil: remove dead updatedir code
This code has not been used in a long while.
Added signature for changeset
50c922c1b514
Added tag 2.5.3 for changeset
50c922c1b514
hgweb: show correct error message for i18n environment
If exception is error.LookupError and running in i18n environment,
below condition is always true.
Because msg is translated and dosen't contain 'manifest'.
if util.safehasattr(err, 'name') and 'manifest' not in msg:
This patch creates a new exception class and uses it instead of
string match.