On certain linux, macOS environment, there is already a system getopt. This often creates conflict when compiling filament. Here we alias utils::getopt to either the system getopt (if present) or third_party/getopt. Fixes #7551
matinfo
matinfo lists the content of a compiled material as output by matc. This tool is meant to be
used for debug purpose only.
Usage
matinfo [options] <material file>