pgAdmin III commit: Improved the debugger to work better with PPAS <= 9

Improved the debugger to work better with PPAS <= 9.2

Resolved the issues listed below:
- Function/Procedure (plpgsql/edb-spl) execution completed with an error - "no
target for SPL-style OUT parameter" (PPAS <= 9.2)
Invoke the target (procedure/function) with the value explicitly, instead of
using the PQexecParams (a libpq API) due to a bug in PPAS <= 9.2
- A function with the OUT parameter and other VARIADIC parameter is not
debuggable on PPAS/PostgreSQL
Fixed it by using the sequence number properly for IN/INOUT parameters and
ignoring them for the OUT parameter
- On execution completion an edb-spl function was showing result value with
PPAS <= 9.2
With the latest redesing of debugger, we were able to show the result
properly for PPAS >= 9.3. But - for earlier version, we will have to use the
anonymous block with edb-spl. And, that forced us to fetch the result as
message and the result will be shown in the dbms-message window, instead of
result window.
- Marker, showing current position of the execution in debugger, was offset by
1 for PG/PPAS <= 9.0

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=pgadmin3.git;a=commitdiff;h=82672c2e320fbbb2ba26132dc671d84b2bc67cc7

Modified Files
--------------
CHANGELOG | 1 +
pgadmin/debugger/dbgController.cpp | 8 +-
pgadmin/debugger/dbgEvents.cpp | 2 +-
pgadmin/debugger/dbgTargetInfo.cpp | 119 ++++++++++++++++--------------
pgadmin/debugger/dlgDirectDbg.cpp | 2 +-
pgadmin/include/debugger/dbgController.h | 3 +
6 files changed, 75 insertions(+), 60 deletions(-)