VirtualHosts should inherit configuration from root

[GoogleCodeExporter]

It is more cumbersome that necessary to use MPS with virtual hosts.  I think we 
should add a configuration-merging function to pagespeed_module.  Note the TODO 
in that code now at the bottom of mod_instaweb.cc

  NULL,  // TODO(jmarantz): merge root/VirtualHost configs via merge_dir_config.


Duncan's suggestion is to have a new .conf directive which turns on 
configuration-merging.  This should be feasible.  We could also default-this to 
"off" in C++ and turn it on in the default pagespeed.conf so that new users get 
the easier-to-use version.

Original issue reported on code.google.com by jmara...@google.com on 14 Sep 2012 at 12:48

[GoogleCodeExporter]

Original comment by jmara...@google.com on 17 Sep 2012 at 7:30

• Changed state: Started

[GoogleCodeExporter]

Original comment by jmara...@google.com on 17 Sep 2012 at 7:32

• Added labels: Milestone-v23

[GoogleCodeExporter]

Code in in r1978. Still need docs.

Original comment by morlov...@google.com on 25 Sep 2012 at 2:28

[GoogleCodeExporter]

Docs staged (will be pushed once a version with the code is part of a release)

Original comment by morlov...@google.com on 5 Nov 2012 at 4:38

• Changed state: Fixed