Tidy on WIN32 but not MSVC

When compiling tidy  (current CVS) on my system (WIN32 under MINGW) I
get a problem with module mappedio.c. It objects to the i64 suffixes in
lines 278 and 281.

Looking at the module, the cause seems to be that; if the platform is
_WIN32 (which it is) then it assumes that the compiler is MSCV (which it
is not, it uses GNUC).

I have had an inexpert go at hacking it and the desired result was
obtained by adding near the start the lines

#if defined (__GNUC__)
#define _MSC_VER 1301
#endif

I put them after the #endif on line 88. This also has the desired effect
of suppressing the #pragma warning on line 93.

Now this is clearly not ideal, but it achieved the desired result, and
the binary runs all the test cases. Perhaps a seasoned developer could
do a better job of it. I suspect that what is needed is a modification
to platform.h to create a dedicated meta variable.

For reference I am running MINGW 3.1.0-1 with gmake 3.80.0-3. This
includes gcc v3.2.3. MINGW is a developer environment, but does not
require a special runtime environment for the generated code.

--
Cheers,

Rick Parsons

Bristol, England

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