[repo] fix extid2entity to ensure connection's has a cnxset
else we'll call source.doexec, which attempt to access to cnxset.cu, and crash
in some case (eg unittest_cwxmlparser in sobjects/test).
Also, manually switch to 'write' mode to ensure cnxset is not released until
commit/rollback when some entity is inserted.
\.svn
^build$
^dist$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$
\.old$
syntax: regexp
.*/data/database/.*\.sqlite
.*/data/database/.*\.config
.*/data/database/tmpdb.*
.*/data/ldapdb/.*
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/
data/pgdb/