Changes since 2013-05-21 follow.

:::::::: INIT ::::::::

13-05-21 C+probe: add ksh-2013-05-21 `...` hang workaround -- FIXME

:::::::: ksh93 ::::::::

13-05-23  --- Release ksh93v- ---
13-05-23  A bug for enumeration types in which unset elements of an array
	  expanded to the default enum name rather than to the empty string
	  has been fixed
13-05-23  A bug in which set -u did not fail for unset array elements of
	  an array of short ints (typeset -is) has been fixed.
13-05-22 +Added -c option to typeset which is similar to typeset -m except
	  that the variable is copied rather than moved.  This is experimental
	  and there are known bugs.  If it can't be made reliable it will
	  not be added.

:::::::: builtin ::::::::

13-05-22 pty.c: fix timeout logic

:::::::: libast ::::::::

13-05-24 string/strsort.c: add strsort_r() for Strcmp_context_f
13-05-22 string/fmtbuf.c: add thread-safe logic
13-05-21 misc/optget.c: add the D "DATA" section

:::::::: libardir ::::::::

111-08-31 ar-omf.c: fix FILENAME #pragma prototyped incompatibility

:::::::: libvcodex ::::::::

13-05-23 api change: vcgetfname(char* path, char** meth, char** suff)
13-05-22 add Vclz4 from Chris Rath


May 24, 2013