packages: winpthreads doesn't need to be checked for link group
packages: removed accidentally added libilbc as submodule
dist: apply patch latin-reorder to fontconfig config
packages: added autoconf detection cache
packages: added fcntl misdetection in config.cache
packages: fix version detection on libutvideo
build: force stop if binfmt support is enabled
packages: more tweaks to autoconf cache
packages: export vars instead of using config.cache

libiconv would update the cache file
packages: no need to kill autom4te.cache
packages: added a patch for gcc version test to xvid