Changed multi-line C comments into another style.

The left side doesn't look unbalanced.

src/ca65/token.c

@@ -62,8 +62,8 @@ int TokHasIVal (token_t Tok)
 
 void CopyToken (Token* Dst, const Token* Src)
 /* Copy a token from Src to Dst. The current value of Dst.SVal is free'd,
- * so Dst must be initialized.
- */
+** so Dst must be initialized.
+*/
 {
     /* Copy the fields */
     Dst->Tok  = Src->Tok;