Before, bson_as_json or bson_as_extended_json could ignore an error it encountered in a nested document while traversing the BSON structure to write JSON output.

Begin implementing extended JSON spec: output $numberInt.

Ensure man pages are distributed and that sphinx cache files .buildinfo
and .doctrees are cleaned.

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.