Added DESTDIR. Tested with multiple DESTDIR targets
Added DESTDIR. Tested with multiple DESTDIR targets

uwiger/rvi_core,magnusfeuer/rvi_core,uwiger/rvi_core,afan1/rvi_core,PDXostc/rvi_core,PDXostc/rvi_core,lillialexis/rvi_core,PDXostc/rvi_core,magnusfeuer/rvi_core,afan1/rvi_core,lillialexis/rvi_core,afan1/rvi_core,lillialexis/rvi_core,magnusfeuer/rvi_core,uwiger/rvi_core