Log Message:
mksh R39 evolved into these through various means:

[tg] Shut up a bogus gcc warning during configuration process
[tg] Spell AT&T consistently in the source code
[tg] Tweak mksh(1) manual page, from wbx@ and «lewellyn:#ksh»
[tg] dot.mkshrc: fix $@ vs. $* mix-up
[tg] dot.mkshrc: add DJB cdb hash function
[tg] Sync with oksh: fix Vi editing mode word erase handling, again
[tg] Skip whitespace between POSIX style shell function name and its definition \ 
parenthesēs during detection if an alias of the same name already exists to \ 
be more robust (Debian Closes: #535970)
[tg] Build system improvements for ACK and nwcc, both on Debian sid
[tg] Fix spelling error in changelog discovered by Lintian
[tg] Aligh “set -o nounset” / “set -u” behaviour with future \ 
POSIX standard, as discussed with GNU bash maintainers, David Korn from AT&T \ 
ksh93, and The Open Group; prompted by use in Debian; Closes: #539538
[tg] add an unsupported way to make printf(1) a builtin
[tg] Build system and regression test code and comment improvements: better and \ 
more comments matching reality better; more reliability w.r.t. passed CPPFLAGS; \ 
more of the MKSH_SMALL changes may be overridden, all of them are now enumerated \ 
on the webpage; fixed some breakage; portability
[tg] MKSH_NOPWNAM and MKSH_SMALL will now both disable the ~fac/ (homedir) \ 
expansion code wholly if defined, not just getpwnam(3) calls
[tg] shells without job control no longer define the standard “stop” \ 
and “suspend” aliases (they are pointless anyway); regression tests \ 
know
[tg] use system RCS ID macros on MirBSD if decent enough
[tg] shut up bogus gcc 4.5/trunk warnings caused by over-optimisation
[tg] restore ANSI C compilability broken in R38 (speed up, even)
[tg] use memcpy(3) ipv strlcpy(3) if possible and safe and secure