Add hosing to existing field "ROFF_F" to monitor fluxes with movie file
Change TLAT TLON to TLATD, TLOND for degrees
Some more diagnostics
added file build-namelist
creation of imau_forcing_nml
add file namelist_definition_pop2.xml
add definition for imau_forcing_nml to namelist XML
change name from imau_forcing_nml to forcing_imau_nml
First implementation of file reading capability.
Proven to work but no interpolation in time yet.
Interpolation of monthly data --> implementation finished, now need to test
BEFORE changes that implement 'prev' and 'next' datasets
needed for the correct interpolation of January and December data points.

The current implementation works but suffers from the problem that
interpolation between 15-Dec and 15-Jan is done with wrong values (from same year)
since the forcing is assumed periodic
add forcing_tools.F90 vanilla
Added NEXT_DATA and PREV_DATA to accurately interpolate in January (first half) and December (second half).
These fields are read from NetCDF files as required in the namelist.
add movie fields MELT, ROFF and IOFF
* from 3 components to 2 components in file (liquid, solid)
* some additional DEBUG info
* in XML file: removed double entry for filename_prev
Added BLANKING MASK to the code and namelist.
Preliminary testing shows it works.
Only available if imau_data_type = 'monthly'
for annual data, rename the required field to FW_liquid (to mirror monthly)
added file time_management
remove file time_management.f90 as we dont need it after all
fix bug: end of year not properly recognized
add vanilla files
Jeremy Pyke changes