Test release for GSL 2.8

[Patrick Alken]

Dear all,

  It is time to make a new GSL release. I have uploaded a test release to:

ftp://alpha.gnu.org/gnu/gsl/gsl-2.7.99.tar.gz
ftp://alpha.gnu.org/gnu/gsl/gsl-2.7.99.tar.gz.sig

All reports are welcome - anyone who can test on various platforms would 
be appreciated (Linux, BSD, Mac OS, Windows).

Please try testing the build:

./configure && make && make check

If you wish you can test building the documentation, but you will need 
to install the python-based sphinx software first:

1. pip install -U --user Sphinx

2. pip install -U --user sphinx_rtd_theme

(the --user flag will install in your home directory rather than 
system-wide)

3. cd doc ; make html

Please report any successes/failures.

Thanks,
Patrick