- the first argument to mmap is NULL, not 0
- don't use madvise (even if available) if file is less than 16MB
- move config_file_name to boa.c
- a minor, aesthetic change to the function definition
  for fixup_server_root
- make the config command list static to config.c
- check single-argument config items for all-whitespace
- check two-argument config items for all-whitespace
- don't emit explicit Connection: Keep-Alive header if we are using
  HTTP/1.1, unless it is to signal that we are closing
- add herror to AC_CHECK_FUNCS and rebuild configure
- implement boa_herror to report on gethostbyname (and related)-specific
  errrors
- fix prototype for open_gen_fd
- use boa.h in src/subloc.c