Threads header files are used across the project without the check for
FEATURE_thread enabled. So moving them out of the FEATURE_thread
condition in CMake file to make them part of the CMake source tree
even if FEATURE_thread is disabled.
Change-Id: I8ee4ee5ffa16054b9af0df0aa5704b0f87678e1a
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
c769432cd5