Added psrfits_combinesidebands.
Forgot Makefile change in previous commit.
Altered combinesidebands to not use all channels from lower sideband. It instead takes half of the overlap from lower and half from upper.
Cleaned up comments.
Added -o option so a base file name can be specified at the command line.
Added starting/ending/output file options.  Ignore row read errors.
Hack to fix rare coherent GUPPI wraps.  Shouldn't harm other stuff, but you never know...
Added initial capability for dropped GPU.  Not quite working...
Initial ability to handle dropped rows.  Needs testing/work.
Now properly handle dropped data from GPUs.
Fixed a couple of bugs, added Mock HDUs, and added code to adjust variance of upper band to match lower band.
Merge branch 'master' of github.com:kstovall/psrfits_utils
Changed psrfits_combinesidebands to combine_mocks, added comments, added stats for scales/offsets, cleaned up code.
Changed combine_mocks to use the search mode template provided with psrfits_utils.
Added -o option to psrfits_subband.
Allow non powers-of-two downsampling
Initial changes for 4-bit handling.  Untested.
Merge branch 'master' into multibit
Merge branch 'master' into multibit
Merge branch 'master' into multibit