Use standard CMake variables - static/shared lib.
Use standard CMake variables - static/shared lib.

Currently JSONCPP_LIB_BUILD_SHARED variable is used as option to build static/shared libraries.
The current patch uses standard CMake variables for this.
Such a workaround is done in https://github.com/open-source-parsers/jsoncpp/issues/51
Current patch will make it generic.
Streamlet/GoogleHelper,Streamlet/GoogleHelper,Streamlet/GoogleHelper,Streamlet/GoogleHelper,Streamlet/GoogleHelper