Add a switch type parameter to BuildAll Powershell script which makes
it possible to build the installers after building drivers.
Add msvc runtime dlls which are needed by the drivers to the installers.
Fix the bug reported by Phillippe Champignon.
The function SC_setInsertedTable() prepares an info for subsequent
'select @@IDENTITY' command. Take table name like catalog.schema.table
into account in the function.
Improve pgxalib.dll(MSDTC support).
1. Add an option which lets xa_open() try to connect to the database
   immediately. This would cause an error at enlistment in dtc when
   the authentication method depends not only on the db user but also
   on the OS user, which means the automatic transaction recovery is
   unavailable.
2. Log the error message in case of SQLDriverConnect() error.
3. Improve the logging.
Remove the code to register XADLL from pgenlist(a) and register the
dll on installation.