[math/scilab] configuration failure by error in version check of hdf5

[Mamoru Iwaki]

Hi,

Re: math/scilab (Revision 327746)

I have failed to configure this port in compilation stage these days.
It is caused by an error in version check code for hdf5.  Because the
code writen in Java uses String.compareTo() for numeric comparision,
"1.8.10" is not recognized as a newer one than "1.8.4".
Could somebody correct this easy bug?

Cheers
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Mamoru Iwaki
Japan