Previously we had a thread per test; once the number exceeded circa 250,
test-libbson --threads failed on MIPS.

Thanks to Petr Pisar for the patch.

Signed-off-by: A. Jesse Jiryu Davis <jesse@mongodb.com>

Signed-off-by: A. Jesse Jiryu Davis <jesse@mongodb.com>

* r1.5:
  post-release bump
  1.5.4 Release
  post-release bump
  1.5.3 Release
  post-release bump
  Release 1.5.2
  CDRIVER-1982 fix ifdef for strerror_s with mingw
  post-release bump
  1.5.1 Release
  post-release bump
  1.5.0 Release
  CDRIVER-1044 Fix unknown-pragmas warning on clang3.4
  CDRIVER-1910 Fedora installation instructions
  post-release bump
  1.5.0-rc6 Release
  update NEWS
  CDRIVER-1923 libbson installs manpages without bson_ prefix
  CDRIVER-1377 use INT64_MAX, not LLONG_MAX, in bson_stroll

Signed-off-by: A. Jesse Jiryu Davis <jesse@mongodb.com>

Now :symbol:`function()` and :symbol:`function` work the same, but let
you choose whether to display parentheses.

Sphinx 1.4 comes with sphinx.ext.githubpages extension, whose sole
feature is to put a .nojekyll file in the root directory of the built
HTML so that GitHub Pages doesn't make bad assumptions.

Sphinx 1.3 is packaged in Ubuntu 14, however, and doesn't ship with the
extension, so vendor it.