package/archlinux: the GCC 4.8 PKGBUILD needs GCC 4.8 corrade as well.

ABI breakages and all. Won't be a problem once *really all* STL use is
dropped from public APIs, but that'll still take a bit of time.

package/archlinux/PKGBUILD-gcc48

@@ -6,7 +6,7 @@ pkgdesc="C++11/C++14 graphics middleware for games and data visualization (built
 arch=('i686' 'x86_64')
 url="https://magnum.graphics"
 license=('MIT')
-depends=('corrade' 'openal' 'sdl2' 'glfw')
+depends=('corrade=dev.gcc48' 'openal' 'sdl2' 'glfw')
 makedepends=('cmake' 'ninja' 'gcc48')
 options=('!strip')
 provides=('magnum-git')