Ported changes from 'Vivado' branch to 'master' branch for v1.3.0.

Integration of pending enhancement from branch 'release'. Split of Po…

…C and Python Infrastructure (pyIPCMI) into 2 repositories.

PoC v1.2.0 with Vivado-specific fixes

Added constraint files for Xilinx AC701 board.

PoC v1.1.2 with Vivado-specific fixes.

PoC v1.1.1 with Vivado-specific fixes.

Minor fixes for the first major release of PoC including the new Pyth…

…on infrastructure.

Merge remote-tracking branch 'github/release'