Fix JPEG compression for screenshots and mjpeg video recording with new JPG library

code/renderer/tr_local.h

@@ -1695,10 +1695,9 @@ void RE_StretchPic ( float x, float y, float w, float h,
 					  float s1, float t1, float s2, float t2, qhandle_t hShader );
 void RE_BeginFrame( stereoFrame_t stereoFrame );
 void RE_EndFrame( int *frontEndMsec, int *backEndMsec );
-void SaveJPG(char * filename, int quality, int image_width, int image_height, unsigned char *image_buffer);
-int SaveJPGToBuffer( byte *buffer, int quality,
-		int image_width, int image_height,
-		byte *image_buffer );
+void RE_SaveJPG(char * filename, int quality, int image_width, int image_height, unsigned char *image_buffer);
+size_t RE_SaveJPGToBuffer(byte *buffer, size_t bufSize, int quality,
+		int image_width, int image_height, byte *image_buffer);
 void RE_TakeVideoFrame( int width, int height,
 		byte *captureBuffer, byte *encodeBuffer, qboolean motionJpeg );