2009-08-20 Edward Smith-Rowland <3dw4rd@verizon.net>
* include/tr1/gamma.tcc: Change include guard from _TR1_GAMMA_TCC
to _GLIBCXX_TR1_GAMMA_TCC to match the rest of the headers in tr1.
* include/tr1/exp_integral.tcc: Replace _TR1_GAMMA_TCC with
__numeric_constants<_Tp>::__gamma_e().
From-SVN: r150958
