Update zm_sdp.h

--- ZoneMinder-master/src/zm_sdp.h	Wed Sep 18 06:00:06 2013 UTC
+++ ZoneMinder-master.rtsp/src/zm_sdp.h	Tue Sep 24 12:04:33 2013 UTC
@@ -103,6 +103,7 @@
         int mClock;
         int mWidth;
         int mHeight;
+        std::string mSprops;
 
         ConnInfo *mConnInfo;
 
@@ -171,6 +172,14 @@
             return( mHeight );
         }
 
+	void setSprops(const std::string props)
+	{
+		mSprops = props;
+	}
+	const std::string getSprops() const
+	{
+		return ( mSprops );
+	}
         const double getFrameRate() const
         {
             return( mFrameRate );