ponder: Patch for gcc
ponder: Patch for gcc

Ponder only requires C++11, but specified a C++14 compile feature.
Use GCC 4.9 compile features as minimum set, and disable vendor
extensions.

SuperNEMO-DBD/homebrew-cadfael,SuperNEMO-DBD/homebrew-cadfael,xgarrido/homebrew-cadfael,xgarrido/homebrew-cadfael