Added executable extension

* Allows the SDL binary to be installed if it's cross compiled from
within linux or macOS for windows for packaging purposes.

CMakeLists.txt

@@ -728,7 +728,7 @@ IF( ENABLE_SDL )
         ${WIN32_LIBRARIES}
         ${LIRC_CLIENT_LIBRARY}
     )
-    INSTALL(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/vbam DESTINATION ${CMAKE_INSTALL_FULL_BINDIR})
+    INSTALL(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/vbam${CMAKE_EXECUTABLE_SUFFIX} DESTINATION ${CMAKE_INSTALL_FULL_BINDIR})
 
     IF( WIN32 )
         INSTALL(FILES ${CMAKE_CURRENT_SOURCE_DIR}/src/sdl/vbam.cfg-example