Plugin changes
fixed up calling conventions
Minor changes.
- Trying to catch down memory leak in RoadRunner data, added tests for assignment to self in lsMatrix
- Added a macro for opening try surrounding C API functions
Added lmfit source to levenberg minimization plugin ...
Added namespace to lm
Various fixes regarding calling conventions
Added __WIN32__ defined, if WIN32 is defined
Added __WIN32__ macro, defined by borland. _WIN32 is defined by MSVC
Abandon the __stdcall using visual studio. It seemed that was a mistake from the beginning.. :(
Added installment of bistable.xml for bifurcation plugin
Enabled autolink for codegear in plugins/wrappers/C

When building plugins, we need libxml2.lib in the install lib folder
Added Bifurcation demo.. will not work until the Auto200 plugin is added to plugins folder
Changed python wrapper to use cdecl ctypes
Got bifurcation plugin working from Python
Cleaned up building of lm plugin
Added ability to pass a plugin progress callback function to plugins
Added a flag to allow a plugin worker to be executed in a thread or be blocking
Plugins work