Fixes issue 37

Using a correcto class descriptor. This change will be available in next release.

src/main/java/org/xerial/snappy/SnappyInputStream.java

@@ -154,6 +154,7 @@ public class SnappyInputStream extends InputStream
     public int rawRead(Object array, int byteOffset, int byteLength) throws IOException {
         int writtenBytes = 0;
         for (; writtenBytes < byteLength;) {
+
             if (uncompressedCursor >= uncompressedLimit) {
                 if (hasNextChunk())
                     continue;

src/main/java/org/xerial/snappy/SnappyNative.cpp

@@ -20,7 +20,7 @@
 
 void throw_exception(JNIEnv *env, jobject self, int errorCode)
 {
-	jclass c = env->FindClass("Lorg/xerial/snappy/SnappyNative;");
+	jclass c = env->FindClass("org/xerial/snappy/SnappyNative");
 	if(c==0)
 		return;
     jmethodID mth_throwex = env->GetMethodID(c, "throw_error", "(I)V");