Nuand/bladeRF — pull request #106 by litghost (2013-09-15 16:35:08+00:00)
Title: Assorted fixes for problems found via USB30CV and USB20CV

- Move and use interface numbers
- Renumber USB_IF_CONFIG from 0 to 3
- Introduced 0 alt-interface as a NULL interface
- Fixed FS descriptor length
- Implemented GET_STATUS, SET_FEATURE, CLEAR_FEATURE w.r.t. halting bulk streams
- Added include guards for firmware_common/bladeRF.h
- Changed guard on suspend/resume requests to key on glUsbConfiguration instead
of glUsbAltInterface. This is because suspend/resume requests are on
interfaces, not endpoints.
- Addresses github tickets #97, #98, #99