[rql2sql] correctly handle modulo operator (closes #2192457)
rql has % as a modulo operator. The string we output gets passed to a
substitution function so the % needs to be escaped.
\.svn
^build$
^dist$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$
\.old$
syntax: regexp
.*/data/database/.*\.sqlite
.*/data/database/.*\.config
.*/data/database/tmpdb.*
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/