ZJIT: Print out full path to --zjit-trace-exits output (ruby#14966)

* ZJIT: Print out full path to --zjit-trace-exits output

This helps with any `chdir`-related issues.

* Don't include dot

Co-authored-by: Takashi Kokubun <[email protected]>

---------

Co-authored-by: Takashi Kokubun <[email protected]>

Author: tekknolagi

zjit.rb

@@ -283,6 +283,7 @@ def dump_locations # :nodoc:
     filename = "zjit_exits_#{Process.pid}.dump"
     n_bytes = dump_exit_locations(filename)
 
-    $stderr.puts("#{n_bytes} bytes written to #{filename}.")
+    absolute_filename = File.expand_path(filename)
+    $stderr.puts("#{n_bytes} bytes written to #{absolute_filename}")
   end
 end