www/h2o: update 1.7.3 -> 2.0.0
- explicitly set H2O_PERL via rc.d script
Summary of major changes:
- support for Brotli compression
- directives for file-level resource mapping
- addition of the status handler
- reverse proxying using HTTPS
Changes: https://github.com/h2o/h2o/releases/tag/v2.0.0
PR: 209927
Submitted by: Dave Cottlehuber <dch@skunkwerks.at> (maintainer)