WSDG: deprecate wtap_filetypes.

Recommend the use of wtap_name_to_file_type_subtype() to get filetype
values, unless you need to run on older versions of Wireshark that don't
have it.

Don't even *mention* wtap_filetypes in the documentation for the new
wtap_ routines, as, if you have those routines, you have
wtap_name_to_file_type_subtype(), because it's one of those routines.

Fix references to "nul" while we're at it - it's "nil" in Lua.

(That part of the WSDG - the Lua reference - is generated, so this
involves changing the source code implementing the Lua routines.)

0 files changed, 0 insertions, 0 deletions