hdf5_ep

[svn-r15969] 
Introduced a new feature in the tools library regarding command line parsing
In the definition of arguments, an "*" means that the switch can or can not have an optional argument. This "*" is put in the code regarding the letter definition, and it is transparent to the user (e.g b* instead of the previous b: ), where ":" notes a required argument after the letter (and no ":" or "*" notes no argument, mandatory)
Used for the h5dump binary option -b
It can be now
1)	-b (defaults to NATIVE)
2)	- b NATIVE
3)	- b FILE
4)	-b LE
5)	-b BE
Note: the keyword NATIVE replaces MEMORY
This feature (-b with no argument) was tested with the sequence of h5dump to binary (NATIVE) then h5import to generate an HDF5 file from the binary file and h5diff to compare the 2 HDF5 files
Tested: windows, linux