Intel Compiler: workaround if libomp-dev is installed on system.

[stephan-rohr]

For intel offload targets, OpenMP initialization is stuck in hanging state if the user has 'libomp-dev' package installed on system. The package adds a symbolic link 'libiomp5.so -> libomp.so'.

The MKL detection from CMake picks up this symbolic link and adds the library to the link line for the miniqmc application.

This patch implements a workaround to just incorporate oneAPI's Library environment into CMake's to supersede the system libraries.