Fix ${S} (thanks Pim Vullers, bug 476920)

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key 62EEF090)
Fix building against >=sys-libs/glibc-2.16.

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key A792A613)
stable on arm as sci-libs/lapack-reference is stable (bug #476224)

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key C2000586)
fixed ncurses detection, bug #476932

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key EB9B4AFA)
properly toggle luajit usage, bug #471704. removed old versions.

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key EB9B4AFA)
amd64/x86 stable wrt bug #449604

(Portage version: 2.1.12.2/cvs/Linux i686, signed Manifest commit with key 0xC42EB5D6)
Revision bump dropping runtime detect of logind as we won't be able to support logind without systemd being running, and this keeps us more close to upstream (preventing us from hitting any hypothetical problems that could arise from it until accepted by upstream). Also force dhcpcd < 6 until upstream confirms updating configure check is enough to properly work with newer versions.

(Portage version: 2.1.12.13/cvs/Linux x86_64, signed Manifest commit with key A188FBD4)
Create special -r0 for stabilization wrt #473404#c3 without multilib-minimal.eclass

(Portage version: 2.2.0_alpha186/cvs/Linux x86_64, signed Manifest commit with key 4868F14D)
old

(Portage version: 2.2.0_alpha186/cvs/Linux x86_64, signed Manifest commit with key 4868F14D)
old

(Portage version: 2.2.0_alpha186/cvs/Linux x86_64, signed Manifest commit with key 4868F14D)
Raised alsa-lib dependency to -r1 because -r0 was reverted to without multilib-minimal.eclass for stabilization.

(Portage version: 2.2.0_alpha186/cvs/Linux x86_64, signed Manifest commit with key 4868F14D)
Introduce contextlib2, a library providing backports and extensions to the contextlib module. It is needed for bedup.

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key 9627F456F9DA7643!)
Introduce bedup, a btrfs deduplication tool.

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key 9627F456F9DA7643!)
Remove vulnerable versions

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key 0x77F1F175586A3B1F)
Fix building with sys-libs/glibc-2.17 (bug #449872).

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key A792A613)
Version bump.

(Portage version: 2.2.0_alpha188/cvs/Linux x86_64, signed Manifest commit with key F3CFD2BD)