debian: Add pseudofile() to syslog-ng-core

Include the pseudofile() destination in syslog-ng-core.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
debian/rules: Workaround --enable-linux-caps brokenness

A temporary workaround for --enable-linux-caps brokenness, setting it to
auto on linux. This should be reverted with alpha2.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
debian/control: Bump libmongo-client build-dep to >= 0.1.8~

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>