adding filter.cc filtering client
add filter and process functions to jfilter
adding options and makefile
Adding JILL module skeleton and registering ports
adding customized ability to customize filter coefficients on command
line and changing default filter
added capability to specify connections upon starting jfilter
Added jpop module
adding digital_filter class

Conflicts:
	modules/makefile
added transfer_function class and butterworth filter design
now has working interface for filter design
now has working interface for filter design
transfer_function class now tracked
adding some exceptions for incompatible jfilter arguments
adding some exceptions for incompatible jfilter arguments
adding some exceptions for incompatible jfilter arguments
some changes to checks on command line arguments
*** empty log message ***
*** empty log message ***
using double precision in filter implementation

Conflicts:
	test/test_arf_writer
	test/test_counter
	test/test_ringbuf
	test/test_stimset
	test/test_xrun
reorganize some stuff
general code cleanup in filter modules