Alexis S. L. Carvalho <alexis@cecm.usp.br> [Fri, 16 Mar 2007 00:22:55 -0300] rev 4228
hgweb: handle IOErrors and OSErrors during unbundle
This allows the client to display a reasonable message to the user
(e.g. "Permission denied: .hg/lock"), instead of the current
"<url> does not appear to be an hg repository".