Revert "ncurses: Remove version 5.4"

This reverts commit 064aabe995240ce02b670ea1173c3ff7a34fab0a.

Applied to the wrong branch...
Revert "Cache::Memory: Disable tests"

This reverts commit 2448d65cc9d7b1847d7ecda28b3445e3d883078d.

Applied to the wrong branch...
mediawiki: Update to 1.20.8

CVE-2013-4567, CVE-2013-4568

(cherry picked from commit f5844f98acc11db87cb174cc54b323f9144c0f6c)