Limit tcmalloc build to GNU C++ 11
Limit tcmalloc build to GNU C++ 11

GCC 8.0 started to complain about pieces of code from tcmalloc.
These complains are arguable and can be disabled with -std=gnu++11.

We can remove this flag if GCC 8.0 undo this behavior or if gperftools
changes its code.

Signed-off-by: Tulio Magno Quites Machado Filho <0e1b3d0765ee75ed64fa2e34822e4949a70a1429@linux.vnet.ibm.com>

advancetoolchain/advance-toolchain,rzinsly/advance-toolchain,rzinsly/advance-toolchain,rzinsly/advance-toolchain,rzinsly/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,rzinsly/advance-toolchain,advancetoolchain/advance-toolchain,rzinsly/advance-toolchain