Use terminals for LOG output of L4Android scenario, as well as a terminal
session for the Linux terminal. Now everything can be used interactively
on one screen: the Linux/Android framebuffer, the Linux console, and the
LOG-output of L4Linux.
When introducing an avl-tree to re-find known capabilities in Fiasco.OC
(issue #112), the memory demand of apllications was slightly increased.
So we've to give the pl11x driver more memory by default. Fixes#140.
The old variant provided 8K capability slots to all processes on core,
which increased binaries by 180 KB for the static allocator. I reduced it
to 4K capabilities stay under 100 KB overhead for the allocator.
Anyway, pci_drv and pl11x_drv need more RAM quota now: 2M for pl11x_drv
and 1M for pci_drv.
