Backpatch to 8.1.X.
Simon Burge
float4/i.86-pc-mingw32=float4-exp-three-digits
float8/i.86-.*-freebsd[234]=float8-small-is-zero
float8/i.86-.*-openbsd=float8-small-is-zero
-float8/i.86-.*-netbsd=float8-small-is-zero
-float8/m68k-.*-netbsd=float8-small-is-zero
+float8/i.86-.*-netbsd[12]=float8-small-is-zero
+float8/m68k-.*-netbsd[12]=float8-small-is-zero
float8/i.86-pc-mingw32=float8-exp-three-digits-win32
float8/i.86-pc-cygwin=float8-small-is-zero
int8/i.86-pc-mingw32=int8-exp-three-digits