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
explicitly disable mysql driver
package cfitsio: update checksum
package suitesparse: update checksum
package libf2c: add mirror
Merge pull request #213 from Raven24/patch-1

explicitly disable mysql driver in Qt
add package yasm
package x264: build native version of yasm assembler
Makefile and docs: remove yasm requirement
Merge branch 'master' of github.com:mxe/mxe
package yasm: install prefixed binary in mxe bin path