hdf5_msb

[svn-r15699] Bug fix #1281
The TEXTFPE was described in the usage (read floats in scientific notation) but was not implemeneted.
Solution:
remove TEXTFPE from the help system and have the TEXTFPE input type do
the same thing as TEXTPF currently does to support backwards compatibility (the format read for both TEXTFPE and TEXTPF is %f)
added a test

tested: windows, linux