Add support for specifying non-default CA certificate bundles.

This is done via SSL_CERT_DIR and --ssl-certstore.

Fixes issue #10916.

https://github.com/ariya/phantomjs/issues/10916
netsniff example: Exclude Data URI from HAR.

Fixes issue #10740.

https://github.com/ariya/phantomjs/issues/10740
ChangeLog: Modify the issue numbers to match the new issue tracker.

https://github.com/ariya/phantomjs/issues/10939
Update ChangeLog.

https://github.com/ariya/phantomjs/issues/10939
Issue #10939: Get ready for version 1.9.0.

https://github.com/ariya/phantomjs/issues/10939
Merge remote-tracking branch 'upstream/master'