package mpc: add cross build for target
packages gmp mpc mpfr: build runtime tests to verify toolchain components
update packages glew harfbuzz libidn libntlm
update package armadillo
update packages gsl ilmbase libgcrypt openexr openscenegraph
package itk: update to version 4.4.1 which includes our hostcheck patch
Merge pull request #221 from muellni/itk-update

package itk: update to version 4.4.1 which includes our hostcheck patch
update package imagemagick
package xvidcore: fix x86_64-w64-mingw32 build
package ffmpeg: enable libxvid for x86_64-w64-mingw32 build
new package sdl2 (release candidate)
new package smpeg2
new package sdl2_mixer (release candidate)
new package sdl2_image (release candidate)
new package sdl2_net (release candidate)
new package sdl2_ttf (release candidate)