vchoi_fork

[svn-r10163] Purpose:  New way to do conversion test from integers to floating numbers.

Description:  This is the 2nd step of changing conversion test.  This checkin is
only for conversion from integer to floating number.  The source buffer of
integer is filled up in the same way described in the last checkin(revision
1.153).


Platforms tested: fuss, sol, and heping - copper was down.  Couldn't do
h5committest.