force ninja to show what is going on

Without this patch ninja buffer "gradle" output and print it as whole
after "gradle" finished.
With this patch you see "gradle" progress online.

Author: Dushistov

AddQtAndroidApk.cmake

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.2 FATAL_ERROR)
 
 # store the current source directory for future use
 set(QT_ANDROID_SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR})
@@ -294,6 +294,9 @@ macro(add_qt_android_apk TARGET SOURCE_TARGET)
     add_custom_target(
         ${TARGET}
         ALL
+        # prevent output buffering in Ninja case, because of gradle part
+        # may take too long
+        USES_TERMINAL
         DEPENDS ${SOURCE_TARGET}
         ${QT_ANDROID_PRE_COMMANDS}
         # it seems that recompiled libraries are not copied if we don't remove them first