Disable libm-test test name beautification for M_* constants

[Andreas Jaeger]

On 12/19/2013 02:52 PM, Joseph S. Myers wrote:
> math/gen-libm-test.pl has code to beautify names of various constants,
> transforming the source form in libm-test.inc into the version
> appearing in test names in libm-test-ulps files.
> 
> This has become decreasingly relevant over time for the M_* constants,
> first as I changed the test names so only the arguments and not the
> expected results appeared in them, then as tests have moved to
> auto-libm-test-* so that automatically generated hex float constants
> get used instead of M_* in test inputs.
> 
> This patch removes the beautification for all M_* constants.  Tested
> x86_64 and x86 and ulps updated accordingly.  Even the one case where
> this affected the name in the ulps files will disappear once complex
> function tests are moved to auto-libm-test-*.

What a shame to see such beautification thrown away ;)

Ok,
Andreas
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