IIO_UTILS: Make thread safer
           This is kind of hoky, but it's safe, and it works.
           downside is it consumes more memory, and makes things
           fractionally slower.

Signed-off-by: Robin Getz <robin.getz@analog.com>
DMM & FMCOMMS2 : Now that things are thread safe, turn back on threads.

Signed-off-by: Robin Getz <Robin.Getz@analog.com>
Makefile: put the -D with the correct file, now that things are split

Signed-off-by: Robin Getz <Robin.Getz@analog.com>
FRU Dialog: Quiet down, by removing printfs

Signed-off-by: Robin Getz <Robin.Getz@analog.com>