lib,wcc,w6a,w6l: char-literals for remaining source magic decimals (Wave-1)

selfhost/cmd/w6a/obj.ww

@@ -263,9 +263,9 @@ export fn emitelf(a: *asm_, fd: i32) i32 = {
 	let i: i32 = 0;
 	for (i < 64) { eh[i] = 0u8; i += 1; };
 	eh[0] = 127u8;	// 0x7f
-	eh[1] = 69u8;	// 'E'
-	eh[2] = 76u8;	// 'L'
-	eh[3] = 70u8;	// 'F'
+	eh[1] = 'E';
+	eh[2] = 'L';
+	eh[3] = 'F';
 	eh[4] = ELFCLASS64;
 	eh[5] = ELFDATA2LSB;
 	eh[6] = EV_CURRENT_W: u8;