Added support for GCC 4.x map files, fixing Bug 3122
Also added a few more debug statements, guarded by if $debug.
f32_perf_test_H2.bat default set of tests for H2
f32_perf_test_H4.bat default set of tests for H4
f32_perf_test_H2_5000files.bat special set of tests for H2, uses 5000 files only (faster)
f32_perf_test_H4_5000files.bat special set of tests for H4, uses 5000 files only (faster)