Disable link-time-optimization for now.
Disable link-time-optimization for now.

It's failing when building with clang on Travis. The underlying problem
seems to be something broken with how LLVM is looking for the gold
linker, and working around that is outside of my skillset.

To learn more, Google: "LLVMgold.so: error loading plugin" lto

minirop/wren,Nave-Neel/wren,munificent/wren,Nelarius/wren,Nelarius/wren,minirop/wren,Nave-Neel/wren,foresterre/wren,munificent/wren,Nelarius/wren,foresterre/wren,munificent/wren,Nelarius/wren,minirop/wren,munificent/wren,Nelarius/wren,foresterre/wren,munificent/wren,minirop/wren,foresterre/wren,foresterre/wren,Nave-Neel/wren,Nave-Neel/wren,minirop/wren,munificent/wren