Do not use -fast, since it causes the code to be generated for

the processor the compiler is running on. Use -xO4 instead.
Fixes #2773.


[SVN r51308]

tools/build

@@ -1 +1 @@
-Subproject commit daaa7260f19252003eb61b82a31a3d4a05f04602
+Subproject commit 1b15304dd82eb6f232af9173019a0fe777f0a017