StringException uses Stroika String class
CString/Utilities must include <cstdarg>
BadFormatException using Stroika String
v2.0a2 release: passes all regression tests for GCC46/47/48 and clang3.4 (caveat - one test fails on gcc 48 with -O2 - probably optimizer bug); and all regtests pass for vs2k12 and vs2k13; and HF/HFWS pass all its regtests