Log Message:
bftpd: Update to version 5.0

Changes:

Jesse Smith <jessefrgsmith@yahoo.ca> -> 5.0
	- Added more checks to places where we are mapping a file
          or checking for symbolic links. Should avoid trying to
          operating on invalid path names or broken symlinks.
          Issue reported by Xu.

Jesse Smith <jessefrgsmith@yahoo.ca> -> 4.9
	- Several checks added to chdir() and other
          return codes to make sure syscalls are all returning
          properly. Patch provided by Zhouyang Jia.
	- Fixed some compiler warnings due to unused or
          oddly indented code.

Jesse Smith <jessefrgsmith@yahoo.ca> -> 4.8
	- Fixed potential double-free bug during Bftpd shutdown.
	- Fixed potential unititalized variable.
	  Thanks to Alex for reporting these bugs.

Jesse Smith <jessefrgsmith@yahoo.ca> -> 4.7
	- Fixed memory leak in rename function.
          Thanks to Alex for reporting this bug.

Jesse Smith <jessefrgsmith@yahoo.ca> -> 4.6
	- Avoid memory corruption when reading config file by initalizing memory.
	- Make sure CHROOT is default option, even if it is not specified
	  in the config file.
	  Thanks for Anton Yuzhaninov for providing the above two fixes.

Jesse Smith <jessefrgsmith@yahoo.ca> -> 4.5
	- Avoid potential buffer underflow in main.c
	  Thanks to Andreas for pointing out this problem.