[PATCH] Add pointer_no_capture function attribute

[MOENE Toon]

> This patch allows to improve call clobbering information by attaching
> pointer_no_capture attribute to functions that are not escape points
> (such as free, realloc or sincos for C99 and most of the fortran library
> intrinsics).

Hmmm, aren't most of the Fortran intrinsics "pure" anyway ?

Toon Moene (at Meteo France for this and the past week)