Whilst hacking things up to get MIPS64 working better in libffi, I came 
across several test cases where structure elements were declared as type 
'int' but the libffi type specifier identified them as uint32.

This patch corrects some (but probably not all) of these incongruities.

Tested on x86_64-pc-linux-gnu and Mips64-linux.

OK to commit?

2007-08-07  David Daney  <ddaney@avtrex.com>

    * testsuite/libffi.call/nested_struct.c (main): Use correct type
    specifiers in structure specification.
    * testsuite/libffi.call/cls_24byte.c (main): Ditto.
    * testsuite/libffi.call/cls_12byte.c (main): Ditto.
    * testsuite/libffi.call/cls_16byte.c (main): Ditto.