Changes for 1.9

  - Buffer overflow fixes.
    Removed all of the statically-allocated buffers, and rewrote the affected
    code to mostly use the dynamically-allocating getstr (from textutils),
    modified to use hardwired termination characters; the exception is
    decode_header_line, where string buffer allocation is avoided completely.
  - Output truncated/broken MIME-encoded ("=?") header lines unchanged.
  - Don't assume that the boundary string is enclosed in "". (This doesn't
    check for \".)

Darren Salt <linux@youmustbejoking.demon.co.uk>

1.8 was the last known upstream version of mimedecode, and was
available at 

	http://www.freesoft.org/CIE/FAQ/mimedeco.c

Version 1.9 should replace that shortly.
