For PR automake/370:

For PR automake/370:
* automake.in (handle_languages): Don't prepend $U to $myext
since handle_single_transform_list now appends it to $obj.
Process the rule twice to handle deansified files in subdirectories.
Mark _.c files in subdirectories for cleaning.
(handle_single_transform_list): Append $U to $obj_sans_ext if
needed: before this dependencies were output foo.Po instead
of foo$U.Po.  Don't output explicit dependencies for renamed
objects or sources in sub-directories: we already output
a full compile rule for them.
(lang_c_finish): Don't always use the full filename in the
.c -> _.c rule.  This reverts part of my change of 2002-11-21.
* tests/ansi6.test, tests/ansi7.test: Make sure deansified
files are created in the right directory, and cleaned.
Reported by Kevin Ryde.