I have cleared out String and ::rtl::OUString calls in module dbaccess/source/core/misc.
It was mainly file dbaccess/source/core/misc/dnstypes.cxx , and it's usages. There are
still some calls in dbaccess for this class(ODnsTypeCollection), that needs refactoring
(eg. in file DbAdminImpl.cxx, method "String ODbDataSourceAdministrationHelper::getConnectionURL() const").
Remaining calls will be my next task (in module dbaccess). I also clear out deprecated macro
RTL_CONSTASCII_USTRINGPARAM every time I find one. The class I've mentioned above
(ODnsTypeCollector) is OK.

Change-Id: Ia0f3bb8cc649d1ecf8decc093f8a1a20ee23c33c
Reviewed-on: https://gerrit.libreoffice.org/2289Reviewed-by: Andras Timar <atimar@suse.com>
Tested-by: Andras Timar <atimar@suse.com>