Some more librfid hacking

Today I fixed a number of long-standing bugs in librfid, resulting mainly from the conversion to autoconf/automake. Now, finally, users can actually use the native CCID driver again, rather than using OpenCT.

Also updated the README, added a udev rules file and started to make the librfid-tool program (formerly OpenCT-escape) a bit more flexible and user-accessible. It's my sincere hope that some other users (i.e. from the CCC) will write the missing user interface stuff and fix some remaining bugs...

Porting Motorola's TS07.10 MUX driver to 2.6.x

Since Motorola has finally released the source code for the mux_cli.o and gprsv.o modules of their 2.4.17 kernel on opensource.motorola.com, I've started to clean them up and port them to 2.6.x.

Due to the questionable coding style of that original source code, and the many interface changes in the TTY layer between 2.4.x and 2.6.x, this turns out to be a bigger task than expected. With some luck, I'll find some time tomorrow at ph-neutral to finish the initial port.

Once that code works on 2.6.x, I already have a quite long list of TODO's. First of all, the lower-layer interface needs to be cleaned up. Ideally, the whole TS 07.10 implementation is a TTY line discipline that can be stacked on top of any UART, together with a virtual/fake UART that makes use of the Motorola specific TS07.10 USB transport.