init.c: Reuse PA/HP-UX code for IA-64/HP-UX, except __gnat_adjust_context_for_raise.

init.c: Reuse PA/HP-UX code for IA-64/HP-UX, except __gnat_adjust_context_for_raise.

2007-04-06  Eric Botcazou <botcazou@adacore.com>
	    Arnaud Charlet  <charlet@adacore.com>

	* init.c: Reuse PA/HP-UX code for IA-64/HP-UX, except
	__gnat_adjust_context_for_raise.
	(__gnat_init_float): on x86 vxworks 5.x and 6.x, we use the same
	implementation of floating point operations as native x86 targets.
	So the FPU should be initialized in the same way using finit. Fix
	floating point operations accuracy issues.
	(__gnat_install_handler, case FreeBSD): Use proper type for sa_sigaction
	member in struct sigaction, so as to avoid warning for incompatible
	pointer types.

From-SVN: r123580