Only set OPTIMIZED_CFLAGS default on amd64 to allow building packages on i386

Reported by:	amdmi3


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@372672 35697150-7ecd-e111-bb59-0022644237b5
- Update to checkin 8d28349

  The next update will be 3.1-RC1.

Changes:
  * The HTML interface is now fixed for file:// and direct access. This
    currently only works for the build directory. The jail-level and top-level
    do not yet work, but may in the future.
  * Fix usage over NFS when root does not have access to current directory.
  * Fix performance for qemu/native-xdev by not using /bin/sh for pkg(8)'s
    ABI_FILE


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@372673 35697150-7ecd-e111-bb59-0022644237b5