This fixes the dreaded crash in sc_unoapi test.
Thanks to Kohei for pointing in the right direction.

Caolán fixed Iterator management which was buggy. (thank you !)

Replaced --enable-ext-postgresql-sdbc with --disable-postgresql-sdbc.
Renamed postgresql-sdbc.uno{.ini,rc} to consistent postgresql-sdbc.ini
(which made the code a little easier).
Signed-off-by: Fridrich Štrba <fridrich.strba@bluewin.ch>

(cherry picked from commit 3a7ae48b)
Conflicts:
	configure.in
	connectivity/source/drivers/postgresql/makefile.mk

use this library for interface tests and implement the test in the
correct module by creating one test class per implementation class
The implementation class should inherit from all interface tests it
needs

This should make it more easy to write tests since we no longer need to
write the same test method multiple times

SfxMenuCtrlArr_Impl used to be a PTRARR_DEL, so use a boost::ptr_vector
to ensure elements are deleted.
(regression from 94d4764a)

which means that we don't crash in --enable-dbgutil on cancel
of the addressbook dialog

* Interpreter tried to access a nonexistent matrix for external reference.
* In ScInterpreter::PopExternalDoubleRef(ScMatrixRef& rMat) set error for
  unexpected conditions. In caller or descendants check for error or presence
  of ScMatrix.