whitespace changes
move all print-* files into libnetdissect, even though ndo work has not finished
ndo-ize print-ascii: hex_print_with_offset()
Merge branch 'master' of git+ssh://bpf.tcpdump.org/tcpdump/master/git/tcpdump

Conflicts:
	enc.h
fix a few compiler warnings about prototypes

print-ascii.c needs prototypes of ascii_print(),
hex_and_ascii_print_with_offset() and hex_and_ascii_print().

print-icmp6.c needs prototypes of in_cksum_shouldbe() and ns_nprint().
add a convenience symlink for README