9899 cw(1onbld) should shadow more compilation

*** 135,149 ****
  .Nm cw
  will invoke each shadow compiler, with the outputs modified (as well as any
  translation for compiler style) as follows:
  .Bl -enum
  .It
! If neither of
! .Fl c ,
! .Fl S
! appears in the argument list (that is, linking is attempted or only the
! pre-processor is invoked), the shadow compilers will not be invoked.
  .It
  If the
  .Fl o Ar filename
  option was provided, with or without a separating space, it will be replaced with
  .Fl o Ar tempfile
--- 135,148 ----
  .Nm cw
  will invoke each shadow compiler, with the outputs modified (as well as any
  translation for compiler style) as follows:
  .Bl -enum
  .It
! If
! .Nm cw
! is invoked to link-edit without compilation (the input files are all objects),
! the shadow compiler is not invoked.
  .It
  If the
  .Fl o Ar filename
  option was provided, with or without a separating space, it will be replaced with
  .Fl o Ar tempfile