error message consistent with fpm run

Author: perazz

src/fpm/cmd/install.f90

@@ -151,7 +151,7 @@ end function is_executable_target
   subroutine handle_error(error)
     type(error_t), intent(in), optional :: error
     if (present(error)) then
-      call fpm_stop(1,error%message)
+      call fpm_stop(1,'*cmd_install* error: '//error%message)
     end if
   end subroutine handle_error