OTB 6.6-rc1 fails to find libqwt-qt5 on Debian unstable

Description

OTB 6.6-rc1 fails to find libqwt provided by libqwt-qt5-dev on Debian unstable because it contains the -qt5 suffix.

The attached patch add support for libqwt-qt5: qwt-qt5.patch

Steps to reproduce

Build OTB 6.6-rc1 with -DOTB_USE_QT:BOOL=ON & -DOTB_USE_QWT:BOOL=ON on Debian unstable with the following dependencies:

• libqt5opengl5-dev
• libqwt-qt5-dev
• qtbase5-dev
• qttools5-dev

Configuration information

Debian unstable, OTB 6.6-rc1.