Obtain Meshoptimizer flags when using system libs

The Meshoptimizer CMake files don't seem to be working right. On more
than one platform, they always conclude the package as not found.
Nevertheless, the library is typically installed in standard paths, that
no special paths need to be included for Meshoptimizer to be found.
Except on macOS (so far), as existing package managers don't have that
package yet, hence the /usr/local/include addition. It's a safe path to
include anyway on other un*x platforms.

0 files changed, 0 insertions, 0 deletions