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

lib/path/path.ww

@@ -7,7 +7,7 @@ package path;
 
 import strings;
 
-def SEP: u8 = 47u8;	// '/'
+def SEP: u8 = '/';
 
 // abs — `p` is an absolute path (starts with '/').
 export fn abs(p: str) bool = {
@@ -75,7 +75,7 @@ export fn extension(p: str) str = {
 	let b: str = basename(p);
 	let i: i32 = b.len - 1;
 	for (i > 0) {
-		if (b[i] == 46u8) {	// '.'
+		if (b[i] == '.') {
 			let r: str;
 			r.ptr = b.ptr + (i: u64);
 			r.len = b.len - i;