New version 0.2.11 available

From the ChangeLog:

21 Mar 2002
	* Fixed problem with NULL foreign-strings with CMUCL
	* Added c-test-fns to examples for allow more specific testing
	of UFFI. Builds on UNIX and Win32 platforms.
	* Added def-union function, added union.cl example
	* Fixed error with ensure-char-[character|integer]
	* Added 2-d array example to examples/arrays.cl	
	* Fixed documentation error on gethostname
	* Added ensure-char-* and def-union to documentation