- fix autoseg registration by moving start/end files back to src directory

Link order was wrong when building via Xcode project because CMake generator sorts files by paths
This made most of classes missing from corresponding segments, and the game crashes right after launch

src/CMakeLists.txt

@@ -1188,7 +1188,7 @@ endif()
 add_executable( zdoom WIN32 MACOSX_BUNDLE
 	${HEADER_FILES}
 	${NOT_COMPILED_SOURCE_FILES}
-	common/objects/__autostart.cpp
+	__autostart.cpp
 	${SYSTEM_SOURCES}
 	${FASTMATH_SOURCES}
 	${PCH_SOURCES}
@@ -1214,7 +1214,7 @@ add_executable( zdoom WIN32 MACOSX_BUNDLE
 	common/thirdparty/math/tan.c
 	common/thirdparty/math/tanh.c
 	common/thirdparty/math/fastsin.cpp
-	common/objects/zzautozend.cpp
+	zzautozend.cpp
 )
 
 set_source_files_properties( ${FASTMATH_SOURCES} PROPERTIES COMPILE_FLAGS ${ZD_FASTMATH_FLAG} )