Merge remote-tracking branch 'origin/master' into dfmem+dma
Part of telem and dfmem refactor. Branches are going to be convolved.
Merge remote-tracking branch 'biomimetics/radio+dma' into dfmem+dma
Merge abandoned
Radio and dfmem + dma seem to function; telem readback in octoroach project fails with AddressError
Twiddles to make dfmem+radio+dma work with octoroach project.
Removing frame retries.
Merge branch 'master' into master_apullin

Conflicts:
	at86rf231_driver.c
	radio.c
Remove remnants of old radio stack to prevent confusion
Merge branch 'master' into master_apullin

Conflicts:
	at86rf.c
Document trxGetLastACKd() in header file
Minor cleanup of dfmem
Revert some changes used for debugging payload.c
Minor cleanup of payload module
Minor cleanup of dfmem module
Removed radioSendPayload, replaced with radioSendData.

Still a major ambiguity over wether or not radioProcess() should be called within this function.
Merge branch 'master' of git://github.com/apullin/imageproc-lib into master_apullin

Conflicts:
	radio.c
Update to radioSendData argument, as per suggestions from fgb.
Merge branch 'master' of git://github.com/apullin/imageproc-lib into master_apullin
Slight restructure of radioSendData; now blocks until packet is enqueued

In the previous scenario, if a packet couldn't get enqueued it was
dropped. This might be desirable to prevent blocking of execution, but
would potentially result in inadvertent data loss.