Fix some fallout for small targets.

Fix some fallout for small targets.

gcc/testsuite/
	Fix some fallout for small targets.

	PR testsuite/52641
	* gcc.c-torture/execute/20190820-1.c:
	Add dg-require-effective-target int32plus.
	* gcc.c-torture/execute/pr85331.c
	Add dg-require-effective-target double64plus.
	* gcc.dg/pow-sqrt-1.c: Same.
	* gcc.dg/pow-sqrt-2.c: Same.
	* gcc.dg/pow-sqrt-3.c: Same.
	* gcc.c-torture/execute/20190901-1.c: Same.
	* gcc.c-torture/execute/user-printf.c [avr]: Skip.
	* gcc.c-torture/execute/fprintf-2.c [avr]: Skip.
	* gcc.c-torture/execute/printf-2.c [avr]: Skip.
	* gcc.dg/Wlarger-than3.c [avr]: Skip.
	* gcc.c-torture/execute/ieee/20041213-1.c (sqrt)
	[avr,double=float]: Provide custom prototype.
	* gcc.dg/pr36017.c: Same.
	* gcc.c-torture/execute/pr90025.c: Use 32-bit int.
	* gcc.dg/complex-7.c: Add dg-require-effective-target double64.
	* gcc.dg/loop-versioning-1.c:
	Add dg-require-effective-target size32plus.
	* gcc.dg/loop-versioning-2.c: Same.

From-SVN: r277142