TR1 Math Special Functions

[Benjamin Kosnik]

> This is it.  Id did add some algorithmic improvements.  Now none of the 
> tests are xfail.
> It bootstraps and regtests on x86_64 with 140 new passes!

Sweet.

I just did a build/test cycle on x86/linux (FC6). This is what I get:

XPASS: 26_numerics/headers/cmath/c99_classification_macros_c.cc (test 
for excess errors)
FAIL: 
tr1/5_numerical_facilities/special_functions/01_assoc_laguerre/check_value.cc 
execution test
FAIL: 
tr1/5_numerical_facilities/special_functions/02_assoc_legendre/check_value.cc 
execution test
FAIL: 
tr1/5_numerical_facilities/special_functions/17_hyperg/check_value.cc 
execution test
FAIL: 
tr1/5_numerical_facilities/special_functions/18_laguerre/check_value.cc 
execution test
FAIL: 
tr1/5_numerical_facilities/special_functions/22_sph_legendre/check_value.cc 
execution test

                 === libstdc++ Summary ===

# of expected passes            4757
# of unexpected failures        5
# of unexpected successes       1
# of expected failures          15


The failures log is attached.

-benjamin
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