No longer use QWT_FOUND and set QWT_DEFINITIONS.
No longer use QWT_FOUND and set QWT_DEFINITIONS.

	QWT_FOUND is not cached so better use QWT_LIBRARY.

	* build-aux/cmake/modules/FindQwt.cmake: Do that.

Signed-off-by: Nicolas Despres <abdeb541ca46f1651c9cc594d44e707056e73d5d@gostai.com>

aldebaran/libport,aldebaran/libport,aldebaran/libport,aldebaran/libport,aldebaran/libport