json-cpp Code

Added patch for mingw from Sebastien Vincent

Implementing support for reading and writing Unicode escape sequences.

Patch from Sebastien Vincent

Added cstring for memcpy(), as suggested by sebastien.vincent@... . This allows gcc-4 to compile. Removed doxygen from SConstruct, since it is now broken; I have been unable to get it to work with either scons 0.97 or scons 2.1; hopefully someone else can get that working again.

- Added basic string test (all char in ASCII range 33-126) and a large string test.

Forgot to add # to %g modifier for sprintf in valueToString for floats. Otherwise no decimal point appears when only zeroes would follow, which changes the type to integer.

Changed valueToString for floats so that zeroes after a decimal are truncated -- saves file size esp. for StyledStreamWriter which uses tabs instead of spaces.

Sketched out some idea to make the build system more reusable across projects.

Fixed compilation issue on windows (avoid using cstring and use string.h instead).

- rewrote doxygen documentation generation integration with Scons (still need some clean-up): list of sources is explicitly passed to a doxyfile builder which is used as input of a doxygen builder. Hence, the doxyfile depends on all the sources.
- documentation is now correctly generated once when source are changed on the first scons run.