make h5repacktst clean a big file which name was changed to "h5repack_big_out.h5", do not use H5Ocopy only when the original DCPL has filters or a request is made for such, more code cleaning
h5repack revision:
1. added a new test due to the introduction of H5Ocopy in the copy of objects (compressed dataset with references, that still must go a second sweep of the file to be regenerated).
2. Moved all the source files from the h5repack test program to a new file h5repacktst.c and removed the old ones (testh5repack*.c).
3. Renamed the binary files from test*.h5 to h5repack*.h5 for easy reference.
4. Modified the shell script to use variables for file names instead of hard coded names
h5repack new features
Description:
implemented some features of h5repack , mostly borrowed from hrepack
like
1) the parsing of options
2) building a list of options
3) printing formats
added a test program that generates files and calls h5diff to compare
the input and output files
Platforms tested:
Misc. update:
