Correct comment on label representation.

* The operation being performed is negation on the *value* of the
label.  The comments are talking about changing the *representation* of the
label, which could be twos complement, sign magnitude, etc.

* The comments also repeat what very clearly happens in the code:

/* Set x to its negation. */
x = ~x;

* Since `~x == ((x * -1) - 1)`, there's no need for the latter.

All in all, previous content was confusing and overly verbose.
Merge pull request #17 from andres-perera/master

Correct comment on label representation.
OpenBSD requires -fPIC on 64-bit SPARC as well.
    Linux kernel 3.0 uses TP_STATUS_VLAN_VALID flag in packet
    auxilliary data (aux->tp_status) to indicate a packet tagged
    with a valid vlan ID 0 with another packet that is not
    vlan tagged. Use this flag to check for the presence of
    a vlan tagged packet. Also be careful not to cause any
    breakage when libpcap is compiled against a newer kernel
    (>=3.0) and used on top of an older kernel that does not
    use this flag.

Signed-off-by: Ani Sinha <ani@aristanetworks.com>
Merge pull request #18 from ani-sinha/master

check for TP_STATUS_VLAN_VALID to differentiate between tagged and untagged packet
Merge branch 'master' of git+ssh://bpf.tcpdump.org/tcpdump/master/git/libpcap
Fix up boldfacing.

Different renderers (different *roffs, different -man macro packages,
different man-to-HTML translators, etc.) may handle fonts and paragraph
boundaries differently, or may handle font resetting in .BR and .B
differently, so:

	reset the font at or before the end of a paragraph;

	don't assume that font changes persist across paragraph breaks;

	don't use .B or .BR inside boldfaced text.
Merge branch 'master' of git+ssh://bpf.tcpdump.org/tcpdump/master/git/libpcap
Update change list.
Today is Tuesday.
Put in the URL for the last LBL distribution, just as we have for tcpdump.
Remove the "last LBL release" stuff.

What the tcpdump man page had was the URL of a *really ancient* tcpdump,
so maybe it *was* the original distribution.  I guess we could mention
what was probably the original libpcap release (libpcap-0.0.tar.Z),
but....
Add close quotes on some strings.
Rewrite the section on qualifiers a bit.

Don't have the tags on the paragraphs lead into the paragraphs; that
works somewhat OK if the tag and the paragraph are on the same line, but
doesn't work if they're on separate lines, as they might be if the tag
is too long, or if the man page is converted to HTML and the lists are
represented as definition lists.
Remove AUTHORS section - it's in pcap(3PCAP).
missed the proc in scanner.l
why I have to do this ... why ??????

Signed-off-by: Nuno Martins <nuno.martins@caixamagica.pt>
bpf_filter stuff

Signed-off-by: Nuno Martins <nuno.martins@caixamagica.pt>
Detach a filter_function from a channel.

Signed-off-by: Nuno Martins <nuno.martins@caixamagica.pt>
Changed the name of the function to release the filter

Signed-off-by: Nuno Martins <nuno.martins@caixamagica.pt>