Added Galileo almanac management (credits to Javier Arribas)
Adding galileo_almanac missing thread
Some fixes in the RINEX 3.01 printer
Improvements in the Galileo RINEX printer
Working on the RINEX printer for Galileo
The RINEX printer now produces Galileo files that can be processed by
RTKLIB
Merge remote-tracking branch 'origin/next' into gps_galileo_hybrid

Conflicts:
	src/algorithms/PVT/gnuradio_blocks/galileo_e1_pvt_cc.cc
	src/core/receiver/control_thread.cc