Buildsystem/Windows: Adjust the installation-parameters for ACE to install only the compiled runtime binary (.dll-file), not .lib-files etc

(Thanks to paradox for the heads up)

--HG--
branch : trunk

externals/ace/CMakeLists.txt

@@ -336,4 +336,4 @@ if(PCH)
   add_native_precompiled_header(ace ${CMAKE_SOURCE_DIR}/externals/ace/PrecompiledHeaders/WinAcePCH)
 endif()
 
-install(TARGETS ace DESTINATION "${CMAKE_INSTALL_PREFIX}")
+install(TARGETS ace RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}")