qwt: fix unpackaged files
* fixes:
qwt-6.0.1: qwt: Files/directories were installed but not shipped
/usr/features
/usr/doc
/usr/plugins
/usr/features/qwtconfig.pri
/usr/features/qwtmathml.prf
/usr/features/qwt.prf
/usr/plugins/designer
/usr/plugins/designer/libqwt_designer_plugin.so
/usr/plugins/designer/.debug
/usr/plugins/designer/.debug/libqwt_designer_plugin.so
(From meta-openembedded rev:
609e4e98967955cff5004b4afc3eaa84b423394d)
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>