Remove dead code
Revert "v8: use https url for gyp"

The server has an untrusted cert, so this seems pointless, and requires
user intervention.

This reverts commit f4a54385782728edde30cc5e6ba3a3a504d28f79.
libmagic 5.18

Also includes a patch concerning bugs (fixed upstream already):
  - http://bugs.gw.com/view.php?id=338
  - http://bugs.gw.com/view.php?id=341
  - http://bugs.gw.com/view.php?id=342
libmagic: update 5.18 bottle.

Closes #28060.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
rakudo-star 2014.03
rakudo-star: add 2014.03 bottle.