Description:
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After upgrading from php 5.0.4 on 5.1.0b3 imagerotate has wrong behavior, it rotates CCW no matter -90 or 90 or 270 or -270 specified as angle. In the code provided I rotate jpeg -90.0 which means CW rotatation (default + is CCW), and the result image is rotated CCW instead.

Reproduce code:
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<?php
  $img = imagecreatefromjpeg("test.jpg");
  $sx = imagesx($img);
  $sy = imagesy($img);
  $newImg = imagecreatetruecolor($sx, $sy);
  imagecopy($newImg,$img,0,0,0,0,$sx,$sy);
  imagedestroy($img);
  $img = imagerotate($newImg,-90.0,0);
  imagejpeg( $img, "result.jpg");
?>

Expected result:
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It rotates image CW on 90.0 deg.

Actual result:
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It Rotates image CCW on 90.0 deg.