Update FHI 7.2 interface, test bandwidths, fix integer overflows
- Fix memory allocation to allow running in SISO. Closes-Bug: #750 (closed)
- Fix memory leak in ru_thread of NotifiedFIFO_elt
- xran patch: fix unaligned access segv (bumps to 5.1.3)
- FHI 7.2: automatically compute FFT size to run with BWs < 80 MHz
- Fix multiple integer overflows
Reviewer: should we keep f7917abb?