libti*: add support for the Nspire DataTracker Cradle & Nspire Lab Cradle

[debrouxl]

Suggested by critor 2016/02/18.

Patching libticables to look for the E01C USB PID instead of E012 was enough to dump the firmware for the DataTracker Cradle through the dumb directory traversal hole, so we know that at least this abandoned prototype used NavNet.

Quick implementation notes:

• [x] libticonv: add new model (2 seem overkill, given that the DataTracker Cradle is an abandoned prototype), add new ticonvis*(). BTW - should the cradles be considered Nspires ?
• [x] libtifiles: add at least the new .tlo file extension, TI-Nspire.tld and TI-Nspire.tlo magic strings in the header;
• [x] libticables: add new USB PID, new Windows driver and its packaging, etc.
• [x] libticalcs: add new CalcFncts instance, etc.

[debrouxl]

This can be done while adding initial Nspire CX II support to libti* (issue #33).

[debrouxl]

Mostly done on the experimental2 branch for non-Windows. When this comment was posted for the first time, the Windows driver and its packaging were missing.