Rewrite of some modbus tests in a more pythonish and robust way

Add .pyo to the ignored files

Make scapy usable as a third party library

By default, only a NullHandler is added to the 'scapy' logger. This
allows third party applications that use scapy as a library to control
the logging of scapy messages.

Signed-off-by: Robin Jarry <robin.jarry@6wind.com>

Some symbols are "internal" to modules (__all__, __file__, __doc__,
__package__, etc.) they should *not* be replaced by the one from other
modules.

The "from xxx import *" python syntax construct takes this into account
and only imports the "public" symbols (i.e., those whose name does not
start with an underscore). When a __all__ symbol is defined in a module
(it should be a list of strings), the "from xxx import *" construct only
imports the names listed in xxx.__all__.

Avoid shadowing module specific symbols when dynamically loading layers
and other modules by only importing "public" symbols.

Fix importing the "tls" layer along the way (remove erroneous __all__
definition).

Signed-off-by: Robin Jarry <robin.jarry@6wind.com>

When using scapy as a third party library, we do not "benefit" from the
loading routine that puts all symbols in the __builtin__ namespace. This
implies that all modules must be "importable" without any errors for
undefined symbols.

This patch fixes importing every scapy module individually. Some
circular imports were fixed (between inet6 and dhcp6).

Most errors were detected by using pylint with the right configuration
(scapy produces a *lot* of errors). Other errors were detected with the
following shell script:

    export PYTHONPATH=".:$PYTHONPATH"
    for f in $(find scapy/ -name '*.py'); do
        f=${f%/__init__.py}
        module=$(echo ${f%.py} | sed 's,/,.,g')
        python -c "import $module; print $module"
    done

Also, replace all implicit relative imports by absolute imports to avoid
surprises with some python versions.

Signed-off-by: Robin Jarry <robin.jarry@6wind.com>

Signed-off-by: Robin Jarry <robin.jarry@6wind.com>

* 'packages' list in setup.py has been updated.

* Fix ecdsa ImportError.

Fix `Raw` and `conf` undefined

EAPOL / EAP class tests updated

cert.py improvements

* Improve cert.py : independence from openssl, ECDSA support, sign/verify capabilities

* Make travis install python-ecdsa

* Clarify ECDSA support

* Cleaning up for cert.py

Fix support and add test for ASN.1 (unknown) high-tag-number

Fix scapy init when gtk is not available

matplotlib.pyplot inits gtk, which may not be available.
If so, handles this as if the import failed.

Use IPv6 source and destination addresses in hashret()

IPv4 mDNS support

Simple pipe example

EAPOL / EAP updates and regression tests

Missing import in packet.py

OS X installation methods updated

In show() and show2() add  the "dump" argument to return the packet representation

Add support for CoAP

layers/bluetooth.py Added New Packets and Bug Fix

Adding TCP Fast Open support.