pgAdmin III commit: Fix the not-same-query process on the history combo

Fix the not-same-query process on the history combobox

The history combobox in the query tool could record the same query more than
once. Actually, it is displayed the same way, but the difference is invisible
(spaces, carriage returns, etc).

Per a report from Kozusznik Michal.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin3.git;a=commitdiff;h=7d0b063fd72fbefd02922ea64768cd38896da3e2

Modified Files
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pgadmin/frm/frmQuery.cpp |   43 ++++++++++++++++++++++++++++++++-----------
1 files changed, 32 insertions(+), 11 deletions(-)