Fixed issues with math constants due to walberla update

23 jobs for walberla-update-fixes in 129 minutes and 41 seconds (queued for 1 minute and 59 seconds)
Name Stage Failure
benchmark_gcc7 Test
make[1]: *** [apps/MultigridStudies/CMakeFiles/MultigridStudies.dir/all] Error 2
CMakeFiles/Makefile2:13380: recipe for target 'apps/MultigridStudies/CMakeFiles/MultigridStudies.dir/all' failed
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2

real 0m54.916s
user 6m49.089s
sys 1m3.648s
ERROR: Job failed: exit code 1