* vsnprintf2: Made compatible between GCC and MSVC - it now always
null-terminates the buffer, and returns -1 on overflow. Fixes#158.
Added tests.
* MeshManager: Use shared_ptr.expired() instead of checking for
bad_weak_ptr exception.
* Xeromyces: Added tests for GetXMBPath, because it does unusual things
in sscanf which MSVC's /analyze complains about.
* ConfigDB, ScriptGlue: Replaced some asserts with return-on-failure,
to avoid invalid array accesses when continuing after the assert (as
complained about by /analyze).
* CStr: Removed "using namespace std". Added tests for handling of
invalid UTF-8.
This was SVN commit r4625.
