Minor bug fixes and comments

Added additional commenting and fixed several small bugs in
align_timeseries
Original commit Hagerman_getsignal

Original commit for Hagerman_getsignal, written by CWB.
Original commit of comp_struct

Function written by Michael Arrant
(http://www.mathworks.com/matlabcentral/fileexchange/22752-compare-structures)
HINT list submission

Versioning might be useful for these.
Original commit Hagerman_record
Scaffold for SIN_createsubject
Hagerman defaults set

Set defaults for Hagerman_record.m
Device structure support and commenting
Original commit create_signaltag