Don't supply our own definition of AF_INET or our own declaration of
"inet_pton()" - use the system ones if they're available.
"mkipv4_address()" doesn't modify the string passed to it - make it a
const pointer.
svn path=/trunk/; revision=12894
make the source files all include the corresponding header files (so
that the declarations in the headers have to match the definitions in
the source files in order for compilation to succeed).
svn path=/trunk/; revision=12116
Also move ncp222.py, x11-fields, process-x11-fields.pl,
make-reg-dotc, and make-reg-dotc.py.
Adjust #include lines in files that include packet-*.h
files.
svn path=/trunk/; revision=11410