Android: Don't default to gradle

There are numerous problems with gradle, so for now switch the default
to off.

Task-number: QTCREATORBUG-13470
Change-Id: I9d2fc216c91656a528875a0bc3b820d4f289b9b0
Reviewed-by: BogDan Vatra <bogdan@kde.org>

src/plugins/android/androidconfigurations.cpp

@@ -210,7 +210,7 @@ void AndroidConfig::load(const QSettings &settings)
     m_sdkLocation = FileName::fromString(settings.value(SDKLocationKey).toString());
     m_ndkLocation = FileName::fromString(settings.value(NDKLocationKey).toString());
     m_antLocation = FileName::fromString(settings.value(AntLocationKey).toString());
-    m_useGradle = settings.value(UseGradleKey, true).toBool();
+    m_useGradle = settings.value(UseGradleKey, false).toBool();
     m_openJDKLocation = FileName::fromString(settings.value(OpenJDKLocationKey).toString());
     m_keystoreLocation = FileName::fromString(settings.value(KeystoreLocationKey).toString());
     m_toolchainHost = settings.value(ToolchainHostKey).toString();
@@ -244,7 +244,7 @@ void AndroidConfig::load(const QSettings &settings)
 }
 
 AndroidConfig::AndroidConfig()
-    : m_useGradle(true),
+    : m_useGradle(false),
       m_availableSdkPlatformsUpToDate(false),
       m_NdkInformationUpToDate(false)
 {