Add option --subdevice-buffer to allow buffer sizes for arbitrary
subdevices (that have asynchronous command support) to be configured.
This complements the --read-buffer and --write-buffer options.
The required argument is a comma-separated list alternating between
subdevice number and buffer size, and should end with a buffer size.
The option and its argument may be specified multiple times.
I'm not sure if all man pages should go in the general 'man'
subdirectory or a more specific subdirectory, but as the general 'man'
subdirectory already contained a man page for comedi_config (which has
its own source subdirectory), I moved the man page for comedi_board_info
there for consistency.
Also changed the EXTRA_DIST line in man/Makefile.am.
The comedi_calibrate.8 man page has been moved to the comedi_calibrate
package where it belongs. Thanks to W. Trevor King for pointing it out.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
