Converted ShatteredPD to Build from Gradle

Major Changes:
- Shattered now builds effortlessly either from gradle CLI or android studio
- Much better dependency management through gradle (although it's not really used atm)
- Separate PD-classes repo is now SPD-classes module within main repo

core/build.gradle

@@ -0,0 +1,17 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 23
+    buildToolsVersion "24.0.0"
+
+    buildTypes {
+        release {
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile project(':SPD-classes')
+}

core/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in C:\Program Files (x86)\Android\android-sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+-dontwarn **
+-keep class com.shatteredpixel.** { *; }
+-keep class com.watabou.** { *; }

core/src/main/AndroidManifest.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+	package="com.shatteredpixel.shatteredpixeldungeon"
+	android:versionCode="118"
+	android:versionName="0.4.1a"
+	android:installLocation="auto">
+
+	<uses-permission android:name="android.permission.VIBRATE"/>
+
+	<uses-sdk
+		android:minSdkVersion="8"
+		android:targetSdkVersion="23"/>
+	
+	<uses-feature
+		android:glEsVersion="0x00020000"/>
+	
+	<supports-screens
+		android:smallScreens="false"
+		android:normalScreens="true"
+		android:largeScreens="true"/>
+		<!--android:xlargeScreens="true"-->
+
+	<application
+		android:icon="@drawable/ic_launcher"
+		android:label="@string/app_name"
+		android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
+		android:allowBackup="false">
+		<activity
+			android:label="@string/app_name"
+			android:name=".ShatteredPixelDungeon"
+			android:configChanges="keyboardHidden|orientation|screenSize"
+			android:screenOrientation="sensorPortrait">
+			<intent-filter >
+				<action android:name="android.intent.action.MAIN" />
+				<category android:name="android.intent.category.LAUNCHER" />
+			</intent-filter>
+		</activity>
+	</application>
+
+</manifest>