CrypTFlow: An end-to-end system for secure TensorFlow inference

Fix in ezpc.sh: add ezpc signed library file only when codegen is either unspecified or specified as ABY or CPP. Plus, diff of precompiled output used to differ because of an earlier change: updated all the precompiled output files.

Fix for input output in other functions giving error when compiled wi…

Fix for input output in other functions giving error when compiled with ABY: made a global variable named role and assigned the same in main.

Updated ezpc.h for logical and arithmetic right shifts: arithmetic right shift now uses logical as subroutine; logical was earlier not padding the output shares correctly - fixed that.

Merging changes for ezpc from internal repo.