Bug#1021310: libsdl2: FTBFS on hppa - patch attached

[Helge Deller]

As Dave wrote, it's (partly) a 32-bit big-endian issue.

This check in test/testevdev.c

#if ULONG_MAX == 0xFFFFFFFFUL
#   define SwapLongLE(X) SDL_SwapLE32(X)
#else
     /* assume 64-bit */
#   define SwapLongLE(X) SDL_SwapLE64(X)
#endif

always chooses the #else part, because the <limits.h> file
isn't #included and thus ULONG_MAX isn't defined.

Adding:
#include <limits.h>
to the top of test/testevdev.c,
or applying the attached patch fixes the build on hppa (and probably power).
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