develop_integration_w24 into develop

Summary or changes:
- work on transmission mode 3 and 4

See merge request !204

only with XFORMS enabled.

The way it was done was confusing.
However, now rank adaptation (if enabled) is not visualized correctly.

fixing handling of ndi/first_tx in dci. commenting out corner case of missed ACK, this needs to be done better

develop_integration_w22 into develop

Summary of changes:
- UE:
  * TDD multiplexing
  * TDD autotest
  * bug fixes: power control management for Msg3, logging
- eNB:
  * CCE allocation fixes
  * S1U port in some configuration files set to 2152 (was 2153)
- support for RedHat enterprise linux 7 and derivatives (CentOS, ...)
  (work provided by RedHat)

See merge request !198

re-adding the possibility in dlsim to bypass the DCI/PDCCH generation. This is necessary for accuracy of the dlsim-tests, which are working again now.