Adjust symbol name matching logic for GCC (#278)

* Adjust symbol name matching logic for GCC

* Turn $ and . into a list

* Fix borrow issue

Author: dbalatoni13

objdiff-core/src/diff/data.rs

@@ -37,12 +37,13 @@ pub fn diff_bss_symbol(
 
 pub fn symbol_name_matches(left_name: &str, right_name: &str) -> bool {
     // Match Metrowerks symbol$1234 against symbol$2345
-    if let Some((prefix, suffix)) = left_name.split_once('$') {
+    // and GCC symbol.1234 against symbol.2345
+    if let Some((prefix, suffix)) = left_name.split_once(['$', '.']) {
         if !suffix.chars().all(char::is_numeric) {
             return false;
         }
         right_name
-            .split_once('$')
+            .split_once(['$', '.'])
             .is_some_and(|(p, s)| p == prefix && s.chars().all(char::is_numeric))
     } else {
         left_name == right_name