2017-05-04  Ulf Hermann  <ulf.hermann@qt.io>

	* Makefile.am: Use our own implementation of tdestroy if we have to.
	* tdestroy.c: New file.

2017-05-04  Ulf Hermann  <ulf.hermann@qt.io>

	* Makefile.am: If GNU basename is unavailable add our own
	implementation.
	* basename-gnu.c: New file.