RISCOS: Correctly set executable extension

.gitignore

@@ -22,6 +22,7 @@ lib*.a
 /ScummVM.app
 /scummvm.docktileplugin
 /\!ScummVM
+/*,e1f
 /scummvm-ps3.pkg
 /*.ipk
 /.project

backends/platform/sdl/riscos/riscos.mk

@@ -1,7 +1,7 @@
 # Special target to create an RISC OS snapshot installation
-riscosdist: $(EXECUTABLE)
+riscosdist: scummvm$(EXEEXT)
 	mkdir -p !ScummVM
-	elf2aif $(EXECUTABLE) !ScummVM/$(EXECUTABLE),ff8
+	elf2aif scummvm$(EXEEXT) !ScummVM/scummvm,ff8
 	cp ${srcdir}/dists/riscos/!Boot,feb !ScummVM/!Boot,feb
 	cp ${srcdir}/dists/riscos/!Run,feb !ScummVM/!Run,feb
 	cp ${srcdir}/dists/riscos/!Sprites,ff9 !ScummVM/!Sprites,ff9

configure

@@ -488,8 +488,8 @@ find_libcurlconfig() {
 #
 get_system_exe_extension() {
 	case $1 in
-	arm-*riscos)
-		_exeext=",ff8"
+	riscos)
+		_exeext=",e1f"
 		;;
 	3ds | dreamcast | ds | gamecube | n64 | ps2 | psp | wii)
 		_exeext=".elf"