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

lib/ww/parse/parse.ww

@@ -126,7 +126,7 @@ fn joindotted(head: str, tail: str) str = {
 	let i: u64 = 0u64;
 	let j: i32 = 0;
 	for (j < head.len) { buf[i] = head[j]; i += 1u64; j += 1; };
-	buf[i] = 46u8;	// '.'
+	buf[i] = '.';
 	i += 1u64;
 	j = 0;
 	for (j < tail.len) { buf[i] = tail[j]; i += 1u64; j += 1; };