CAL inside a MAP not processed

[teuben]

There are some data (e.g. 92626) that have not only a CAL preceding it, but also a CAL inside the MAP. The current software appears to ignore them.

[teuben]

Added a otf_cal=1 to lmtoy_reduce, this will enable the --use_otf_cal flag for the process step. A small "feature" was fixed to each Map now used the most recent Cal that is embedded. Consider it fixed. Parallel sleuthing by MikeH and PeterT

[teuben]

The radiometer.rms map doesn't make good use of multiple Tsys if present. It just uses the first (ical=0)

[teuben]

If there are data with no embedded CAL's, the current pipeline fails. So we need to re-open this issue,