tools: calculate the multisynth output and print it
firmware: enable int mode if div is even integer

to improve jitter performance
fix indent, fix unused vars
Merge pull request #75 from Hoernchen/siclock

see commits
firmware: New fractional sample rate algorithm and usb command

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
libhackrf: Update the library with new fractional sample rate API

And send the new USB command

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
lib/fw: rename the sample rate function
lib: make sure to tell the linker that we're hardfloat, or it will choose the wrong libgcc.a...