BUG: Fix build failure in RenderingParallelLIC on Intel compiler

MPI symbols weren't defined when linking the RenderingParallelLIC
library on Intel compilers.

Also, removed unnecessary include_directories() commands.

Change-Id: I6c5eac0dc5b0c40db9bd0f0882bd60110e98a756
Merge topic '14503_fix_intel_build-rel' into master

0fb3dd73 BUG: Fix build failure in RenderingParallelLIC on Intel compiler