packages libiconv glib: fix for removed gets() and apply patches in glib build
package nsis: fixed build failure

Thanks to <free.man.uu@gmail.com>
* added new package: smpeg2
* added release candidates for sdl2

* these packages can be installed next to sdl1.x
* update checksum to latest release candidate
* smepg2 now got its own package
* also remove -XCClinker from sdl2-config

* thanks Schrober
* added sdl2_ttf
* added sdl2_net
* fixed win64 sdl compile errors with mingw64 - thanks to Franz Schrober

* this should go upstream
update package glib and friends
update package imagemagick
packages apr apr-util qdbm: small fixes
update qt5 module packagess
update package vmime
update package lcms
update package xz
update package qt (Qt 4)
update checksum for cfitsio
add note about winpthreads version