Even though we disable warnings when building jsoncpp itself, including
its headers from other CMake sources may still cause warnings.
Additional work will be needed to port CMake to newer jsoncpp interfaces
while still supporting jsoncpp 1.0.0. For now, just suppress the
markup.
When parsing digits we know our `c - '0'` expression results in a
non-negative value due to preceding conditions. Simply cast the result
to UInt. This fixes compilation on SolarisStudio 12.4.
Some versions of HP-UX do not define 'isfinite' or 'finite' in math.h
for Itanium when preprocessing with C++, so we have to add the
definition ourselves instead to map to the internal version.
Even though we disable warnings when building jsoncpp itself, including
its headers from other CMake sources may still cause warnings. Update
the code to remove these -Wdocumentation warnings.
Update json/json.h to account for our lack of autolink.h. Update
json/config.h to include KWSys Large File Support configuration so that
consistent stream libraries are used (on AIX with XL).
Add a cm_jsoncpp_reader.h header to include the CMake-provided copy of
the json/reader.h header from CMake sources.
