vcl: fix Android build

lround() is missing in the std namespace on the broken Android toolchain, work
it around.

(same as https://cgit.freedesktop.org/libreoffice/core/commit/?id=0cb7d76bc5552245642ba423a87831cd9e0b2b92)

Change-Id: I84c97e6d6bcbc193565c01db3011eb9d4edba6a1
Reviewed-on: https://gerrit.libreoffice.org/32216Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>

vcl/source/gdi/CommonSalLayout.cxx

@@ -28,6 +28,17 @@
 #include <salgdi.hxx>
 #include <unicode/uchar.h>
 
+#if defined(ANDROID)
+namespace std
+{
+template<typename T>
+T lround(T x)
+{
+    return ::lround(x);
+}
+}
+#endif
+
 
 static hb_blob_t* getFontTable(hb_face_t* /*face*/, hb_tag_t nTableTag, void* pUserData)
 {