Add OGR WasP driver (by Vincent Mora, #5416)

git-svn-id: https://svn.osgeo.org/gdal/trunk@27030 f0d54148-0727-0410-94bb-9a71ac55c965
Fix a few warnings raised by MSVC

git-svn-id: https://svn.osgeo.org/gdal/trunk@27031 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_mingw