Bug report: No error when inputing too many "--" to set project settings.

[eniotna308]

Example:
I tried to call generous with a project option using
"generous -c Flash_debug -- -- --swig=/User..."
The option was not set correctly and no crash occurred.

This worked:
"generous -c Flash_debug -- --swig=/User...".

[samueldr]

To fix, we should implement needing a --no-options flag or something to let generous know the intention of skipping this "sub-level" of options gathering.

This, or re-doing the options parsing, since currently it's a bit bothersome to have custom platform handle options in customized ways.