Update nds_query and nds2_channel_source to use the NDSSERVER env variable.
requested to merge jonathan-hanks/nds2-client:issue107_nds_query_should_recognize_NDSSERVER into master
- Extract server info from NDSSERVER iff neither -n or -p are specified.
- Ran clang-format on daq_test.c and nds2_channel_source.c
Closes #107 (closed)