19991105
	version: publicfile 0.50, alpha.
19991108
	bug: ftpd passed contents of remote PASV IP address to byte_diff
		instead of pointer. impact: normal behavior becomes very
		unlikely; the other possibilities are SEGV or exit with
		a bad error message. tnx Chris Johnson. fix: insert &.
	bug: spsv printed first two bytes of IP address. impact: none;
		spsv is just for testing. fix: use port number instead.
	internal: rts now covers ftpd much more seriously.
	ui: httpd now requires uppercase HEAD, GET. tnx Marc Slemko.
	version: publicfile 0.51, alpha.
19991109
	port: Linux sh barfs on ";" as empty separator between "then"
		and "else". impact: rts aborts. fix: use ":" instead.
	ui: main.c now indicates errors with exit codes.
	internal: eliminated strerr from httpd, ftpd.
	internal: separated httpdate.c. rewrote as a stralloc routine.
	internal: revamped date handling in httpd.c.
	ui: minimal support for If-Modified-Since. 9 lines of code.
	internal: separated pathdecode.c.
	internal: added utime; rts now covers modification times.
	version: publicfile 0.52, alpha.
