inclusion of Shlwapi.h changed to shlwapi.h for mingw-w64 compilation to work
inclusion of Shlwapi.h changed to shlwapi.h for mingw-w64 compilation to work

cbeck88/cegui-mirror,arkana-fts/cegui,RealityFactory/CEGUI,cbeck88/cegui-mirror,cbeck88/cegui-mirror,cbeck88/cegui-mirror,arkana-fts/cegui,arkana-fts/cegui,RealityFactory/CEGUI,RealityFactory/CEGUI,arkana-fts/cegui,RealityFactory/CEGUI,RealityFactory/CEGUI,cbeck88/cegui-mirror,arkana-fts/cegui