complete mysql wrapper
change directory database to db
test mysql library
fix bug to mysql library

	modified:   base/MutexLock.h
	modified:   base/noncopyable.h
	modified:   db/Makefile.osx
	modified:   db/MySqlConnection.h
	modified:   db/MySqlResultSet.h
	modified:   db/test.cpp
modify noncopyable.h
fix error with character in  noncopyable.h
test mysql library done
remove rubbish files