E110: revert Makefile for E110, the UCF was accidentally removed
Merge branch 'fpga_master' into maint
gps: use to_ticks in query app to avoid rounding issues

The to_ticks(1.0) is a preferable way to get whole seconds
because it avoids possible rounding issues since just
getting full seconds does not account for the frac seconds.
uhd: fixes for time_spec's to_ticks and from_ticks calls

The fixes address rouding issues when the tick_rate is a non-integer.

Conflicts:

	host/tests/time_spec_test.cpp
uhd: switch the reusable barrier to condition variables

This allows the converter threads in a multi-threaded streamer to wait quietly.
In addition, the use of two barriers in the packet handlers was reduced to one,
by adding a simple exit barrier inside the reusable barrier's wait method.
Merge with upstream/maint (to receive barrier fix by Josh Blum)