Backup upstream version of POL_Install_vcrun2010 function
POL_Install_vcrun2010: use POL_Download_Resource
Backup upstream version of POL_Install_desura function
POL_Install_desura: do not put Desura into ressources

Unless its download is validated with a hash; Otherwise in case of
download problem, the only solution for the user is to go clean his
resources cache.
Backup upstream version of POL_Install_directplay function
POL_Install_directplay: remove spurious spaces
POL_Install_directplay: use POL_Download_Resources and POL_Wine_OverrideDLL
Backup upstream version of POL_Install_gfwl function
POL_Install_gfwl: do not put xliveredist into ressources

Unless its download is validated with a hash; Otherwise in case of
download problem, the only solution for the user is to go clean his
resources cache.
Backup upstream version of POL_Install_mono210 function
POL_Install_mono210: use POL_Download_Resource
Backup upstream version of POL_Install_mono26 function
POL_Install_mono26: use POL_Download_Resource
Backup upstream version of POL_Install_msvc100 function