added new Config class to read / write configuration parameters from conf file
tweaks to fix broken stringstream in Windows, more tweaks for fix broken C++ linker in Windows, ran Win32 tests
create conserved moiety validator function, improve error handling, improve LLVMException, improve steady state error handling, add warning to steady state if conserved moieties are not enabled, fix few issues in Config, ran OSX tests
bumped version number, fix for windows, ran win32 tests
Merge branch 'develop' into mcjit