Implement HTMLAnchorElement.text
Remove redundant git-submodule commands in configure.
Merge pull request #3086 from ChrisParis/HTMLAnchorElement.text

Implement HTMLAnchorElement.text; r=Manishearth
Merge pull request #3123 from SimonSapin/redundant-submodule-commands

Remove redundant git-submodule commands in configure.