Fix up CMAKE to use /MP and allow building through umbrella

CMakeLists.txt

@@ -1,4 +1,6 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12)
+
+ADD_COMPILE_OPTIONS($<$<CXX_COMPILER_ID:MSVC>:/MP>)
 
 SET(PROJ_NAME installer_bundle)
 

src/CMakeLists.txt

@@ -61,4 +61,5 @@ QT5_USE_MODULES(${PROJ_NAME} Widgets)
 
 INSTALL(TARGETS ${PROJ_NAME}
         RUNTIME DESTINATION bin/plugins)
-INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJ_NAME}.pdb DESTINATION pdb)
+INSTALL(FILES $<TARGET_PDB_FILE:${PROJ_NAME}>
+        DESTINATION pdb)