Removed the old OPENDAP_DEBUG_OPTIONS macro from many configure.ac files. Fixed some param initializations; method overloads (virtual methods that lacked 'const'). Other warnings.
Removed the old OPENDAP_DEBUG_OPTIONS macro from many configure.ac files. Fixed some param initializations; method overloads (virtual methods that lacked 'const'). Other warnings.

OPENDAP/hdf5_handler,OPENDAP/hdf5_handler,OPENDAP/hdf5_handler,OPENDAP/hdf5_handler,OPENDAP/hdf5_handler,OPENDAP/hdf5_handler