This improves the performance of exiv2.exe on TIFF files about 5x
The MSVC branch adds mmap.cpp and mman.h - borrowed and slightly touched from KDE
- the contribution of KDE is acknowledged and respected (and changes documented)
- exv_msvc.h modified to support MM
- added support files include/sys to enable compilation on MSVC
I discovered while doing a private build for a user that msvc/include/exv_msvc.h still contains the #pragma comment code.
I've removed that (again!) and fixed a consequential link error on exiv2lib.vcproj DebugDLL | ReleaseDLL
Rebuilt everything on VS2003/5/8 and all run the runner.bat test OK.
1) exv_msvc.h moved to msvc/include/exv_msvc.h
2) exv_msvc.h no longer has #pragma comment statements to link zlib
3) project files updated to explicitly link appropriate zlib library
