* src/npth-config.in: Move to ../.
* src/npth.m4: Move to ../.
* w32/npth-config.in: Remove.
* w32/npth.m4: Remove.
* Makefile.am (EXTRA_DIST): Add npth-config.in and npth.m4.
(bin_SCRIPTS): new.
(m4datadir, m4data_DATA): New.
* configure.ac (AC_CONFIG_FILES): Adjust accordingly.