Avoid clash of duplicate uninstall target
Avoid clash of duplicate uninstall target

This can happen if CAF is integrated into a larget cmake build
through add_subdirectory(). In case another project in the
superbuild defines a target with the same name, cmake aborts.

actor-framework/actor-framework,actor-framework/actor-framework,DavadDi/actor-framework,actor-framework/actor-framework,DavadDi/actor-framework,DavadDi/actor-framework,actor-framework/actor-framework,DavadDi/actor-framework