Expand the space_leak expected results to work on more platforms

testsuite/tests/ghc-regress/space_leaks/all.T

 
 test('space_leak_001',
-     # Before trac #2747 was fixed this was 565, after it was 3
-     [stats_num_field('peak_megabytes_allocated', 3, 3),
-      stats_num_field('max_bytes_used', 430000,
+     # Before trac #2747 was fixed this was 565.
+     # Now it's: 3 (amd64/Linux)
+     #           4 (x86/OS X)
+     #           5 (x86/Linux)
+     [stats_num_field('peak_megabytes_allocated', 3, 5),
+      stats_num_field('max_bytes_used', 410000,
                                         450000),
-                      # expected value: 440224
-      stats_num_field('bytes allocated', 9340000000,
-                                         9350000000)],
-                       # expected value: 9343740368
+                      # expected value: 440224 (amd64/Linux)
+                      #                 417016 (x86/OS X)
+                      #                 415672 (x86/Windows)
+      if_platform('i386-unknown-mingw32',
+          stats_num_field('bytes allocated', 730000000,
+                                             750000000)),
+                           # expected value: 739138140 (x86/Windows)
+      if_not_platform('i386-unknown-mingw32',
+          stats_num_field('bytes allocated', 9320000000,
+                                             9350000000))
+                           # expected value: 9343740368 (amd64/Linux)
+                           #                 9331570416 (x86/Linux)
+                           #                 9329073952 (x86/OS X)
+      ],
      compile_and_run,
      [''])