Hi Robert,
I've attached a fix for a subtle bug that causes animations (and quite
possibly other things) to be serialized incorrectly.

For the following code:

#define MYMACRO(NAME) myOutputStream << #NAME;
MYMACRO(Group)

you would expect that "Group" would be output. However, as there are many
overloaded operator<< functions, none of which take a const char* argument,
the function that's actually called is operator<<(bool). Hence what actually
gets output is "TRUE".
An actual example of this is in serializers\osgAnimation\Animation.cpp,
WRITE_CHANNEL_FUNC2.

So the simple solution to this is to add operator<<(const char*), attached.

Thanks
-Michael

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