boost: update

breaks luabind but all other deps (armadillo assimp cgal json_spirit openscenegraph pcl wt xmlwrapp) okay
wt: fixes for newer boost
icu4c: update
libgcrypt: update
pcl: update
update various packages (tested on i686-w64-mingw32.static)

ffmpeg flac gdk-pixbuf glew glib graphicsmagick ilmbase imagemagick
libffi libftdi1 libircclient libmicrohttpd libpaper librsvg libtool
libwebp libxml++ libxml2 mpg123 mxml nlopt oce openblas opencv
opusfile pfstools poco poppler primesieve x264 xine-lib