rgbfix: make rgbfix compile for Linux

Signed-off-by: Vegard Nossum <[email protected]>

src/rgbfix/Makefile

@@ -0,0 +1,8 @@
+all: rgbfix
+
+.c.o:
+	gcc -Wall -I. -I.. -Iinclude -g -c -o $@ $<
+
+rgbfix: $(patsubst %.c,%.o,$(wildcard *.c))
+	gcc -Wall -o $@ $^
+