Related tdf#45775: PgSQL new DB allow empty Datasource

Declare PostgreSql in dsn stuff

Change-Id: I72343bff0d5e6a65a45fc47cc1d346155330f1e5
Reviewed-on: https://gerrit.libreoffice.org/19310Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Lionel Elie Mamane <lionel@mamane.lu>
(cherry picked from commit 898aff0d)
Reviewed-on: https://gerrit.libreoffice.org/19315Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
(cherry picked from commit 6b847910)

dbaccess/source/core/misc/dsntypes.cxx

@@ -405,6 +405,7 @@ DATASOURCE_TYPE ODsnTypeCollection::determineType(const OUString& _rDsn) const
         KnownPrefix( "sdbc:mysql:jdbc:",    DST_MYSQL_JDBC,         false ),
         KnownPrefix( "sdbc:mysql:mysqlc:",  DST_MYSQL_NATIVE,       false ),
         KnownPrefix( "sdbc:mysqlc:",        DST_MYSQL_NATIVE_DIRECT,false ),
+        KnownPrefix( "sdbc:postgresql:",    DST_POSTGRES,false ),
 
         KnownPrefix( "sdbc:address:mozilla:",           DST_MOZILLA,            true ),
         KnownPrefix( "sdbc:address:thunderbird:",       DST_THUNDERBIRD,        true ),

dbaccess/source/inc/dsntypes.hxx

@@ -61,6 +61,7 @@ enum DATASOURCE_TYPE
     DST_MYSQL_NATIVE_DIRECT = 25,
     DST_FIREBIRD            = 26,
     DST_EMBEDDED_FIREBIRD    = 27,
+    DST_POSTGRES = 28,
 
     DST_USERDEFINE1,    /// first user defined driver
     DST_USERDEFINE2,