analyzer: testsuite fixes for alloca, getpass, and setjmp (PR 93316)

analyzer: testsuite fixes for alloca, getpass, and setjmp (PR 93316)

PR analyzer/93316 reports various testsuite failures where I
accidentally relied on properties of x86_64-pc-linux-gnu.

The following patch fixes them on sparc-sun-solaris2.11 (gcc211 in the
GCC compile farm), and, I hope, the other configurations showing
failures.

There may still be other failures for pattern-test-2.c, which I'm
tracking separately as PR analyzer/93291.

gcc/analyzer/ChangeLog:
	PR analyzer/93316
	* analyzer.cc (is_setjmp_call_p): Check for "setjmp" as well as
	"_setjmp".

gcc/testsuite/ChangeLog:
	PR analyzer/93316
	* gcc.dg/analyzer/data-model-1.c: Include <alloca.h>.
	* gcc.dg/analyzer/malloc-1.c: Likewise.
	* gcc.dg/analyzer/malloc-callbacks.c (get_alloca): Return
	__builtin_alloca rather than alloca.
	* gcc.dg/analyzer/malloc-paths-8.c: Include <alloca.h>.
	* gcc.dg/analyzer/sensitive-1.c: Define __EXTENSIONS__ before
	including unistd.h.
	* gcc.dg/analyzer/setjmp-2.c: Replace include of <setjmp.h>
	with "test-setjmp.h" and usage of setjmp with new SETJMP macro.
	* gcc.dg/analyzer/setjmp-3.c: Likewise.
	* gcc.dg/analyzer/setjmp-4.c: Likewise.
	* gcc.dg/analyzer/setjmp-5.c: Likewise.
	* gcc.dg/analyzer/setjmp-6.c: Likewise.
	* gcc.dg/analyzer/setjmp-7.c: Likewise.
	* gcc.dg/analyzer/setjmp-7a.c: Likewise.
	* gcc.dg/analyzer/setjmp-8.c: Likewise.
	* gcc.dg/analyzer/setjmp-9.c: Likewise.
	* gcc.dg/analyzer/test-setjmp.h: New header.