Enhancement 64 phy test



See merge request !46

Conflicts:
	targets/ARCH/EXMIMO/USERSPACE/OCTAVE/txsig.m
	targets/RT/USER/lte-ue.c

- time_meas to measure time spent in scheduling
- timeplot to show nice histograms in realtim of above measurement

The VCD traces have changed. This commit gets in synch
with current status.

The RBs were not marked as used. A later UE downlink scheduling
could use those RBs, messing up everything.

Not sure this is the right place to mark them used. Maybe better
to do it in the "if (!CCE_allocation_infeasible" test.

This hack was probably put in place in an attempt to circumvent
problems solved by previous commits.

As far as I checked (with my knowledge of the day) we can't exhaust
uplink physical bits with ULSCH data bits when there is CQI reporting
at the same time.

To be refined if this idea is proved wrong.

RI bits are present only in some transmission modes.

For aperiodic reporting (the mode we do as of today),
36.213 7.2.1 (release 10) says:

    "RI is only reported for transmission modes 3 and 4,
    as well as transmission modes 8 and 9 with PMI/RI reporting"

This commit activates decoding of RI bits only for transmission
modes 3 and 4. 8 and 9 are not done today (as far as I know).

G was wrongly computed in some places, not taking into account
CQI and RI bits. This commit saves the correct value computed
in ulsch_decoding so we can reuse it in ulsch_decoding_data
(and the like).

Only the file openair1/PHY/LTE_TRANSPORT/ulsch_decoding.c has
been checked. If the computation is done somewhere else the
problem might still exist.

[OAI-UE] issue#136 attach fixes:

- pusch/pucch power control
           - pucch encoding call
           - srb/drb add with default value

See merge request !44