Prepare the building script to suport travis or set other automated
builds, while keeping other options to manual builds.
In before_install script, create needed directories, and dowload
mdbtools sources.
Add smtk2ssrf build script to travisbuild.sh
Signed-off-by: Salvador Cuñat <salvador.cunat@gmail.com>
In the process, simplify our dependency a bit by no longer building
against libssh2 (we don't support ssh based authentication for git
on Windows) and libcurl (since it's proxy implementation doesn't appear
to actually work on Windows, anyway).
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
