spit plugin fix

- quote values and identifiers properly
- remove now unnecessary reserved word dialog
- also consider primary key field and geometry field in double field check
- allow rename of primary key field
- remove disabled connect button (spit automatically connects on OK)
- keep the window open window if there was an error
- fixes #865 and #930


git-svn-id: http://svn.osgeo.org/qgis/trunk@8293 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

src/plugins/spit/CMakeLists.txt

@@ -7,7 +7,6 @@ SET (SPIT_SRCS
      qgsconnectiondialog.cpp
      qgspgutil.cpp
      qgsshapefile.cpp
-     qgseditreservedwordsdialog.cpp
 )
 
 SET (SPIT_PLUGIN_SRCS
@@ -23,14 +22,12 @@ SET (SPIT_EXE_SRCS
 SET (SPIT_UIS
      qgsconnectiondialogbase.ui
      qgsspitbase.ui
-     qgseditreservedwordsbase.ui
      ../../ui/qgsmessageviewer.ui
 )
 
 SET (SPIT_EXE_MOC_HDRS
      qgsspit.h
      qgsshapefile.h
-     qgseditreservedwordsdialog.h
      qgsconnectiondialog.h
 )