gcc: fix pie override for .cpp tests too.
gcc: fix pie override for .cpp tests too.

Else _GLIBCXX11_USE_C99_STDIO is not detected by configure, which
results in std::to_string missing.

For reasons I don't understand this results in removed libcilkrts-devel
headers, but they didn't seem to belong into that subpackage in advance.

floGik/void-packages,juliendehos/void-packages,kulinacs/void-packages,coredumb/void-packages,NeoChontrix/void-packages,EaterOfCode/void-packages,liwakura/void-packages,juliendehos/void-packages,coredumb/void-packages,NeoChontrix/void-packages,necrophcodr/void-packages,coredumb/void-packages,NeoChontrix/void-packages,NeoChontrix/void-packages,EaterOfCode/void-packages,kulinacs/void-packages,liwakura/void-packages,coredumb/void-packages,floGik/void-packages,necrophcodr/void-packages,NeoChontrix/void-packages,liwakura/void-packages,juliendehos/void-packages,kulinacs/void-packages,floGik/void-packages,floGik/void-packages,necrophcodr/void-packages,EaterOfCode/void-packages,liwakura/void-packages,floGik/void-packages,EaterOfCode/void-packages,liwakura/void-packages,liwakura/void-packages,necrophcodr/void-packages,coredumb/void-packages,kulinacs/void-packages,EaterOfCode/void-packages,juliendehos/void-packages,kulinacs/void-packages,NeoChontrix/void-packages,necrophcodr/void-packages,coredumb/void-packages,floGik/void-packages,juliendehos/void-packages,juliendehos/void-packages,kulinacs/void-packages