[luaposix] Pushed x86 stabilisation back 45 days

Waiting for upstream stabilisation of LuaBitOp.
[rstctl] Pushed x86 stabilisation back 45 days

Waiting for upstream stabilisation of pastescript.
[pytrainer] Pushed x86 stabilisation back 45 days

Waiting for upstream stabilisation of usable sqlalchemy-migrate and pywebkitgtk.
[luaposix] Pushed amd64 stabilisation back 60 days

Waiting for upstream stabilisation of LuaBitOp.
[hubugs] Pushed amd64 stabilisation back 60 days

Waiting for upstream stabilisation of cov-core, and usable html2text and
httplib2.
Update metadata cache for upstream's eclass changes
Merge branch 'feat/amd64_keywording'

* feat/amd64_keywording:
  [hubugs] Pushed amd64 stabilisation back 60 days
  [luaposix] Pushed amd64 stabilisation back 60 days
  [pytrainer] Pushed x86 stabilisation back 45 days
  [rstctl] Pushed x86 stabilisation back 45 days
  [luaposix] Pushed x86 stabilisation back 45 days