* These changes bring cross-compiling Blender for Windows on Linux one step closer to reality. The 'biggest' change is in makesdna SConscript to make sure a linux native makesdna is built, that can be run, too. Next to that proper checks for env['OURPLATFORM']=='linuxcross' are added in various places. Switch change in pluginapi.c was necessary, and AFAIK it should work like that also on WIN32, if not, slap me. Note: everything *compiles* now nicely, it is just that the final *linking* doesn't work (yet). Anyone who fixes this will be the hero of cross-compilers :)