distro11s: remove svn as supported VCS

Signed-off-by: Jason Abele <jason@cozybit.com>
distro11s: make fetch/update readable

parse_pkg already exports globals with useful names, use them to make
code in update and fetch functions more readable

Signed-off-by: Jason Abele <jason@cozybit.com>
distro11s: allow FORCE_BUILD of fetch.sh

For jenkins specifically (and perhaps other users sometimes) it is
important to be able to reset the source dirs specified in pkglist to
the remote url, branch and tag specified in the pkglist.

This patch allows this with the following invocation:
FORCE_BUILD=1 ./scripts/fetch.sh

WARNING: Using FORCE_BUILD with fetch with local changes risks loosing
work.  Please ensure all commits from SRCDIR are pushed elsewhere before
using FORCE_BUILD=1 with fetch.

Signed-off-by: Jason Abele <jason@cozybit.com>
distro11s: use/track newer tshark from debian sid

debian/sid already has tshark 1.10 ... no reason to build it ourselves

Signed-off-by: Jason Abele <jason@cozybit.com>