* lib/adlint/exam/c_builtin/cc1_code.rb : Fix function call extraction
  in order to output function calls within the global scope.

* lib/adlint/exam/c_builtin/ld_metric.rb : Improve performance of
  FN_CALL metric measurement.

* lib/adlint/ld/object.rb : Fix bad function call graph calculation.

* lib/adlint/exam/c_builtin.rb : Fix bad abbreviations of class names.
* lib/adlint/code.rb : Ditto.
* lib/adlint/report.rb : Ditto.