Add 4 settings (in hmat.h) to validate Rk compression (in compression.cpp)
change the name of files dumped when validating compression

Now it looks like "Rk_[0,249]x[750,999]" and "Full_[500,749]x[0,249]"
Compression validation: set default values to false for the flags
Correct the binary header of res files

In the 5 integers array, the first integer is 0 1 2 3 for S D C Z.
Merge branch 'gs/validate_compression'