Log Message:
Update to 1.900.0:

1) The wavelet transform code has been rewritten in order to be more
cache efficient (via loop tiling).  As a few individuals have noted,
the old code could often result in an excessive number of cache misses.

2) Some man pages have been added to the distribution as provided
by Roland Stigge.

3) Some simple timer routines have been added to facilitate performance
measurements.

4) Numerous bugs have been fixed (e.g., memory leaks, JP2 box processing
problem, etc.).

5) Some name space pollution issues have been resolved.

6) A few compiler warnings have been fixed.