Fix conan_find_libraries for cross-compile. (#899)
Fix conan_find_libraries for cross-compile. (#899)

In case cross compilation some toolchain defines

set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

This effectively prevents conan to find proper libraries.
But in case of conan the path is already known and there is no need to search for library
in other places.
conan-io/conan,memsharded/conan,birsoyo/conan,conan-io/conan,mropert/conan,conan-io/conan,tivek/conan,birsoyo/conan,lasote/conan,memsharded/conan,luckielordie/conan,tivek/conan,memsharded/conan,memsharded/conan,mropert/conan,lasote/conan,luckielordie/conan