Log Message:
Update msdl to 1.2.4-r1.
While here, enable LICENSE.

Version 1.2.4-r1.
-msdl
	- bugfix release
	- fiexed bug about redirection (thanks for Mr.Jubany)
	- fixed some codes

Version 1.2.4.
-msdl
	- 10th release
	- fiexed proxy string parse bug
	- fixed is_url_valid_char(), added some missing valid characters
          (thanks for Mr.Jubany)
	- fixed SETUP request routine, a=control can be both absolute/relative
          URL
	- use stdout for error output. error message goes to stdout now!