Problem was in oc2/dap.y.
In definition of errormsg:, change WORD_WORD to WORD_STRING
since the msg field of an opendap error response is a quoted
string.
Also took the opportunity to modify ncgen to
transfer the logging level (-L flag) into the c-code
generated using -lc.
User request to have all orphaned DAP2 attributes kept as netcdf
global attributes. This is primarily a change in the oc code
nplus testcase dataset changes.
Result may be inconsistent with netcdf-Java output.
