Merge AOSP android-9.0.0_r3

Fix conflicts and make it build in 5.1, 6.0, 7.1, 8.1, and 9.0

Change-Id: Ida0a64c29ff27d339b7f42a18d820930964ac6e4
diff --git a/gui/pages.cpp b/gui/pages.cpp
index a3a1df3..fd0ad9b 100644
--- a/gui/pages.cpp
+++ b/gui/pages.cpp
@@ -42,7 +42,7 @@
 #ifdef USE_MINZIP
 #include "../minzip/SysUtil.h"
 #else
-#include "../otautil/SysUtil.h"
+#include <otautil/SysUtil.h>
 #endif
 
 extern "C" {