Remove -xarch=generic:

  1)  When speccifying an architecture using -xarch/-xtarget, it needs to
  come before the compilation type (e.g. -fast) flags
  2)  It makes it hard to build 64-bit builds using -xarch=v9,v9a and v9b.

Suggestion from Tomas Puverle.


[SVN r34353]

tools/build

@@ -1 +1 @@
-Subproject commit eaf3e52104a01a766fcdcf08f4a5922aa4fd81b9
+Subproject commit 2c4fc1420de34d752514850a327c9b06442a6870