ebuild: depend on <dev-lang/v8-3.16.5:= for 0.8 ebuilds

I forgot to cherry-pick 304b183fd53e9851c21d1c61ed53b7fe551abf1b
language: skip german_utility
Merge pull request #504 from karolherbst/bug503

language: skip german_utility
PKGBUILD: make myself maintainer, Jookia contributor.
PKGBUILD: remove some architecture specific stuff since we build with 32-bit support by default
Merge remote-tracking branch 'matthiaskrgr/PKGBUILD'
Merge pull request #502 from karolherbst/ebuild

ebuild: depend on <dev-lang/v8-3.16.5:= for 0.8 ebuilds
Merge pull request #506 from matthiaskrgr/install_script

build_desura.sh: don't suggest to run ./install/desura if we build a rpm...