Dep: Switch to boost process instead of old standalone version

cmake/showoptions.cmake

@@ -11,7 +11,6 @@ message("")
 message("* Install core to        : ${CMAKE_INSTALL_PREFIX}")
 if( UNIX )
   message("* Install libraries to   : ${LIBSDIR}")
-  message("* Install configs to     : ${CONF_DIR}")
 endif()
 message("")