[FIX] setup.py: pywebdav 0.9.8 breaks the API by renaming the DAV module
[FIX] expression: when evaluatoing *like operator, add cast to text to column in case of different type
[FIX] Allow missing opcodes, harden check for private attributes (dunder), check inside embedded code objects.
[MERGE] Forward port of branch 7.0 up to rev 5278 rev-id jke@openerp.com-20140409151659-xwttchbtbj02v1w7