make st and std separate programmes

st.c

@@ -4,7 +4,7 @@
 #include <string.h>
 
 int
-Xmain(int argc, char *argv[]) {
+main(int argc, char *argv[]) {
 	if(argc == 2 && !strcmp("-v", argv[1]))
 		eprint("st-"VERSION", © 2007-2008 st engineers, see LICENSE for details\n");
 	else if(argc != 1)