Raw.py -- Rdata now always reads in data as MCCDs

For either ultracam or ultraspec, the outcome is an MCCD.
tofits.py -- added more header information

Now has timing data
to3dfits.py, tofits.py, Raw.py -- more header info

Got more header info into FITS.
Merge branch 'master' of github.com:trmrsh/trm-ultracam

Stu done something I think; not sure what.