commit: MSVC project files

[Mike Nordell]

Added plugin manager and ut_exception
MSVC6/
    AbiUtil.dsp
    AbiXap.dsp

/Mike
P.S. Could we get a poll for what compilers supports exceptions? Not that I
suggest we use them everywhere, but in constructors for classes it's the
only way to report errors. Takes a bit of developer experience though to
know what is rolled back as part of the stack undwinding.