CB-8176 Update Android SDK search path for Android Studio 1.0
CB-8202 Fix gradle build signing when passwords provided interactively
CB-8143 Use gradle plugin 1.0.0 for Android Studio 1.0.0
CB-8143 Use gradle 2.2.1 instead of 1.12 to appease Android Studio 1.0 warning-on-startup
CB-8204: Reinstate link tasks to avoid gradle build failures
Allow plugins to set ext.multiarch to enable multiple APK building

The xwalk webView need build multiple apks by default after install
cordova-crosswalk-engine plugin, we can set ext.multiarch=true to open
the flag in plugin, it don't necessary set system environment BUILD_MULTIPLE_APKS
manually.

This closes #141
CB-7980: Add 9 to versionCode for minSdk 20+ if not multiarch
CB-7980 Add --minSdkVersion and --versionCode flags to cordova/build command

These are also exposed via environment variables: ANDROID_VERSION_CODE, ANDROID_MIN_SDK_VERSION
This also fixes build.gradle modifying the value set by ANDROID_VERSION_CODE when multi-apk is enabled (override should never be modified)
CB-8168 Add support for --list