Use gen-libm-test.py to generate ulps table for manual

[Joseph Myers]

This discussion seems to have died down.  How can we move further towards 
consensus on the use of Python in building the manual (taking account of 
the desires also expressed to use it to replace Awk scripts used in the 
build, and so make it a required build tool for building glibc at all)?

-- 
Joseph S. Myers
joseph@codesourcery.com