check in some windoze compat crap (still does not compile through for
windoze)

add errmsg_info and msg

int -> long for sizes
    char -> unsigned char for strings

stralloc first.
  add stralloc_zero to clear a stralloc

initial Solaris /dev/poll port

add tai64 and tai6464 typedefs
add error message buffer routines
add io timeout routines

and stralloc_chop

distinguished from a length 0 token.

byte_copy and add buffer_putspace, a trivial shortcut.

buffer_get_token for getting n bytes till finding a termination char or
EOF/error.