[Polly] Regenerate isl-noexceptions.h.

Regenerate the C++ wrapper header from the current isl version's

The most notable change is that some dimension sizes are represented by
an isl_size (instead of unsigned), which is a signed int. Additionally,
some function may return -1 in case of an error which already had been
fixed in the past. The C++ may no return -1 instead of UINT_MAX which
caused the problems.

Some types in Polly had been changed from unsigned to isl_size
(that were not already auto) and some loops/comparision had to be
changed to avoid unsigned/signed comparison warnings.

GitOrigin-RevId: ab0556bb208bb7598b13e6a629d936e1920d6c0b
9 files changed