Fix conf_to_src build.

2cd31691 broke conf_to_src,
because strings library is now dependend on mysys (my_alloc etc are used
now directly in string lib)

Fix by adding appropriate dependency.

Also exclude conf_to_src from VS IDE builds. EXCLUDE_FROM_ALL
is not enough for that.

strings/CMakeLists.txt

@@ -34,4 +34,5 @@ ADD_DEFINITIONS(-DDISABLE_MYSQL_THREAD_H)
 ADD_CONVENIENCE_LIBRARY(strings ${STRINGS_SOURCES})
 
 ADD_EXECUTABLE(conf_to_src EXCLUDE_FROM_ALL conf_to_src.c)
-TARGET_LINK_LIBRARIES(conf_to_src strings)
+SET_TARGET_PROPERTIES(conf_to_src PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD TRUE)
+TARGET_LINK_LIBRARIES(conf_to_src mysys strings)