RPATH wrappers break SystemCompiler easyblock

[lexming]

In 5.0.0beta1 the resulting module files generated by SystemCompilers have their root set to the temp rpath_wrappers folder instead of the actual prefix to the system compilers:

help([==[

Description
===========
The GNU Compiler Collection includes front ends for C, C++, Objective-C, Fortran, Java, and Ada,
 as well as libraries for these languages (libstdc++, libgcj,...).


More information
================
 - Homepage: http://gcc.gnu.org/
]==])

whatis([==[Description: The GNU Compiler Collection includes front ends for C, C++, Objective-C, Fortran, Java, and Ada,
 as well as libraries for these languages (libstdc++, libgcj,...).]==])
whatis([==[Homepage: http://gcc.gnu.org/]==])
whatis([==[URL: http://gcc.gnu.org/]==])

local root = "/tmp/eb-apog3ijf/tmpa7b6t4p_/rpath_wrappers"

conflict("GCCcore")

prepend_path("CMAKE_PREFIX_PATH", root)
setenv("EBROOTGCCCORE", root)
setenv("EBVERSIONGCCCORE", "8.5.0")
setenv("EBDEVELGCCCORE", pathJoin(root, "easybuild/GCCcore-8.5.0-easybuild-devel"))

-- Built with EasyBuild version 5.0.0beta1-r3e28cb6ab55a2f6b0604d8263cf6279d991c717e