Changes

Fix Bug 671: Add JPEG Decoder w/o AWT Dependencies

Original JavaScript code from <https://github.com/notmasteryet/jpgjs/blob/master/jpg.js>,
author 'notmasteryet' <async.processingjs at yahoo.com>.

Ported to Java.

Enhancements:
 * InputStream instead of memory buffer
 * User provided memory handler
 * Fixed JPEG Component ID/Index mapping
 * Color space conversion (YCCK, CMYK -> RGB)
 * More error tolerant

+++

Features:
              JOGL   AWT
  RGB          ok     ok
  YCCK         ok     Exception
  CMYK         ok     Exception
  YUV Store    ok     n/a
  Need Y-Flip  no     yes

+++

Benchmark: TestJPEGJoglAWTBenchmarkNewtAWT

  JOGL.RGB Loops 100, dt 1199 ms, 11.99 ms/l
  JOGL.YUV Loops 100, dt  351 ms,  3.51 ms/l
  AWT..... Loops 100, dt 2144 ms, 21.44 ms/l

File:    jogl/src/test/com/jogamp/opengl/test/junit/jogl/util/texture/j1-baseline.jpg
Machine: GNU/Linux PC (AMD 8 core), JavaSE 6 (1.6.0_38)

.++++ UITestCase.setUp: com.jogamp.opengl.test.junit.jogl.util.texture.TestJPEGJoglAWTBenchmarkNewtAWT - benchmark
libEGL warning: DRI2: failed to authenticate
0: JPEGImage[261x202, bytesPerPixel 3, reversedChannels false, JPEGPixels[261x202, sourceComp 3, sourceCS YCbCr, storageCS RGB, storageComp 3], java.nio.DirectByteBuffer[pos=0 lim=158166 cap=158166]]
0: TextureData[261x202, y-flip false, internFormat 0x1907, pixelFormat 0x1907, pixelType 0x1401, border 0, estSize 158166, alignment 1, rowlen 0, buffer java.nio.DirectByteBuffer[pos=0 lim=158166 cap=158166]
JOGL.RGB Loops 100, dt 1199 ms, 11.99 ms/l
0: JPEGImage[261x202, bytesPerPixel 3, reversedChannels false, JPEGPixels[261x202, sourceComp 3, sourceCS YCbCr, storageCS YCbCr, storageComp 3], java.nio.DirectByteBuffer[pos=0 lim=158166 cap=158166]]
0: TextureData[261x202, y-flip false, internFormat 0x1907, pixelFormat 0x1907, pixelType 0x1401, border 0, estSize 158166, alignment 1, rowlen 0, buffer java.nio.DirectByteBuffer[pos=0 lim=158166 cap=158166]
JOGL.YUV Loops 100, dt 351 ms, 3.51 ms/l
0: TextureData[261x202, y-flip true, internFormat 0x1907, pixelFormat 0x80e0, pixelType 0x1401, border 0, estSize 158166, alignment 1, rowlen 261, buffer java.nio.HeapByteBuffer[pos=0 lim=158166 cap=158166]
AWT..... Loops 100, dt 2144 ms, 21.44 ms/l
++++ UITestCase.tearDown: com.jogamp.opengl.test.junit.jogl.util.texture.TestJPEGJoglAWTBenchmarkNewtAWT - benchmark
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