add Java APIs needed for WhatsApp MainActivity and ConversationActivity

src/api-impl-jni/database/android_database_SQLiteGlobal.c

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+** Modified to support SQLite extensions by the SQLite developers: 
+** sqlite-dev@sqlite.org.
+*/
+/*
+** Rewritten from C++ to C for Android Translation Layer: 
+*/
+
+#include <jni.h>
+
+#include <sqlite3.h>
+
+#include "../generated_headers/android_database_sqlite_SQLiteGlobal.h"
+
+// Limit heap to 8MB for now.  This is 4 times the maximum cursor window
+// size, as has been used by the original code in SQLiteDatabase for
+// a long time.
+static const int SOFT_HEAP_LIMIT = 8 * 1024 * 1024;
+
+JNIEXPORT jint JNICALL Java_android_database_sqlite_SQLiteGlobal_nativeReleaseMemory(JNIEnv* env, jclass clazz) {
+	return sqlite3_release_memory(SOFT_HEAP_LIMIT);
+}