native linux 64-bit support v2

Here is new results (v2) compared with 32-bit binary compiled from rebolsource/master, two progressions, no regressions:

--- r_2_101_0_4_4_B67154_4E5726.log	2013-08-27 13:15:39.886715794 -0400
+++ r_2_101_0_4_40_23D80F_4E5726.log	2013-08-27 12:38:10.306708383 -0400
@@ -4849,13 +4849,13 @@
 [0.1 == round/half-down/to 0.15 0.1] "succeeded"
 [0.2 == round/half-down/to 0.15001 0.1] "succeeded"
 [0.5 == round/half-down/to 0.55 0.1] "succeeded"
-[0.6 == round/half-down/to 0.55001 0.1] "failed"
+[0.6 == round/half-down/to 0.55001 0.1] "succeeded"
 [0.5 == round/half-down/to 0.75 0.5] "succeeded"
 [1.0 == round/half-down/to 0.75001 0.5] "succeeded"
 [-0.1 == round/half-down/to -0.15 0.1] "succeeded"
 [-0.2 == round/half-down/to -0.15001 0.1] "succeeded"
 [-0.5 == round/half-down/to -0.55 0.1] "succeeded"
-[-0.6 == round/half-down/to -0.55001 0.1] "failed"
+[-0.6 == round/half-down/to -0.55001 0.1] "succeeded"
 [-0.5 == round/half-down/to -0.75 0.5] "succeeded"
 [-1.0 == round/half-down/to -0.75001 0.5] "succeeded"
 [0 = sign? 0] "succeeded"
@@ -8463,12 +8463,12 @@
 ] "failed, error was caused in the test code"
 [equal? read write clipboard:// c: "test" c] "failed, error was caused in the test code"
 
-system/version: 2.101.0.4.4
-code-checksum: #{B67154A19B8BCC7C977D2CCE0C9E43B395389CBC}
+system/version: 2.101.0.4.40
+code-checksum: #{23D80F69007D034B0DD66F548523D4556183DD63}
 test-checksum: #{4E5726B3CE4645AC5EAB8AF08F677090E0998DD3}
 Total: 4696
-Succeeded: 4212
-Test-failures: 160
+Succeeded: 4214
+Test-failures: 158
 Crashes: 16
 Dialect-failures: 0
 Skipped: 308