sftp: fix CMake build error in including libssh library
requested to merge pdabrowski/kio-extras:phd-kio-extras-CMakeLists.txt-LIBSSH_INCLUDE_DIRS-fix into master
Fixes build error:
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
/home/phd/kde/src/network/kio-extras/sftp/LIBSSH_INCLUDE_DIR
used as include directory in directory /home/phd/kde/src/network/kio-extras/sftp
Edited by Piotr Henryk Dabrowski