Redefinition of MPI_VERSION

[devreal]

MPICH defines the macro MPI_VERSION so the plugin should not:

In file included from /zhome/academic/HLRS/hlrs/hpcjschu/src/readex/scorep_plugin_x86_energy/src/x86_energy_sync_plugin.cpp:40:0:
/opt/cray/pe/mpt/7.7.1/gni/mpich-gnu/7.1/include/mpi.h:458:0: warning: "MPI_VERSION" redefined
 #define MPI_VERSION    3
 
<command-line>:0:0: note: this is the location of the previous definition

[rschoene]

I assume that's due to that is due to

scorep_plugin_x86_energy/CMakeLists.txt

Line 45 in 6b5d049

target_compile_definitions(x86_energy_sync_plugin PRIVATE MPI_VERSION)

@AndreasGocht can you confirm
@devreal can you try without?