pgAdmin III commit: Make sure that queries use LIKE with _ escaped

Make sure that queries use LIKE with _ escaped

For example:

SELECT nspname
FROM pg_namespace
WHERE nspname NOT LIKE 'pg_%'
AND nspname != 'information_schema'
ORDER BY nspname

will get every schema whose name isn't information_schema and doesn't begin
with pg (the _ character is a joker character when used with LIKE, meaning
"replace-me-with-one-character-whatever-it-is").

So, we need to escape the underscore to get rid of its special meaning.

Branch
------
REL-1_14_0_PATCHES

Details
-------
http://git.postgresql.org/gitweb?p=pgadmin3.git;a=commitdiff;h=58c82680abf7ee6e4279b84efe1d2b6aa49b41b3

Modified Files
--------------
CHANGELOG | 5 +++--
pgadmin/dlg/dlgFunction.cpp | 2 +-
2 files changed, 4 insertions(+), 3 deletions(-)