dev-lang/spidermonkey: Import spidermonkey-1.7.0-r2 because elinks needs an older version of spidermonkey and old versions of spidermonkey call $(LD) directly, breaking portage-multilib.

(Portage version: 2.2.0_alpha11-r1/hg/Linux x86_64, signed Manifest commit with key 6BA81050)