'make clean' removes *.po with unintended consequences

[Assaf Gordon]

Hello Jim,

I suspect commit 5b44cd0 ( "build: fix sed.1 dependency; work with latest 
automake" ) had unintended consequences due to this:

  +# This is a kludge to remove lib/.deps/{getfilecon,obstack}.Po,
  +# which are left behind by bleeding edge automake.
  +# Without this, 'make distcheck's final comparison would fail.
  +MOSTLYCLEANFILES += lib/.deps/*.Po

It seems running "make clean" in the source directory (not related to 'make 
distcheck') leaves the makefiles broken, requiring a new "./configure" run.

Example:
    $ ./configure  # works
    $ make         # works
    $ make clean   # works
    $ make
    Makefile:2523: lib/.deps/alloca.Po: No such file or directory
    Makefile:2524: lib/.deps/lib_libsed_a-acl-errno-valid.Po: No such file or 
directory
    Makefile:2525: lib/.deps/lib_libsed_a-acl-internal.Po: No such file or 
directory
    Makefile:2526: lib/.deps/lib_libsed_a-acl_entries.Po: No such file or 
directory 
    Makefile:2527: lib/.deps/lib_libsed_a-alloca.Po: No such file or directory
    ...
    make: *** No rule to make target 'lib/.deps/lib_libsed_a-xmalloc.Po'.  Stop.


From there on, neither 'make' nor 'make clean' work, and re-running 
'./configure' is required.
This reproducible on both Mac OS X and Debian.


Not sure what's the best way to solve it while still removing the "Po" files.

regards,
 - assaf