make check errors just before the release

[Brian Gough]

I have increased the tolerances for those tests to a suitable level.
It should pass now.

Mark Galassi writes:
 > 
 > Brian, I ran a "make -k check" on my Red Hat 6.1 system, and got
 > somewhat different errors from the known error list.  Here's my
 > transcript of the failures:
 > 
 > If you think it's not a problem, I'll just go ahead and bundle it up.
 > 
 > [rosalia@odie gsl-work]$ nice -19 make -k check
 > Making check in gsl
 > make[1]: Entering directory `/tmp/gsl-work/gsl'
 > make[1]: Nothing to be done for `check'.
 > ....