7069 i386_XARCH should include -m32

*** 334,344 ****
  #
  # compiler '-xarch' flag. This is here to centralize it and make it
  # overridable for testing.
  sparc_XARCH=    -m32
  sparcv9_XARCH=  -m64
! i386_XARCH=
  amd64_XARCH=    -m64 -Ui386 -U__i386
  
  # assembler '-xarch' flag.  Different from compiler '-xarch' flag.
  sparc_AS_XARCH=         -xarch=v8plus
  sparcv9_AS_XARCH=       -xarch=v9
--- 334,344 ----
  #
  # compiler '-xarch' flag. This is here to centralize it and make it
  # overridable for testing.
  sparc_XARCH=    -m32
  sparcv9_XARCH=  -m64
! i386_XARCH=     -m32
  amd64_XARCH=    -m64 -Ui386 -U__i386
  
  # assembler '-xarch' flag.  Different from compiler '-xarch' flag.
  sparc_AS_XARCH=         -xarch=v8plus
  sparcv9_AS_XARCH=       -xarch=v9