Add LinuxPPC mappings

Author: tatsuo-ishii

src/test/regress/resultmap

@@ -8,11 +8,14 @@ int2/i.86-pc-linux-gnulibc=int2-not-representable
 int4/i.86-pc-linux-gnulibc=int4-not-representable
 int2/sparc-sun-solaris=int2-too-large
 int4/sparc-sun-solaris=int4-too-large
+int2/powerpc-unknown-linux-gnu=int2-not-representable
+int4/powerpc-unknown-linux-gnu=int4-not-representable
 geometry/hppa=geometry-positive-zeros
 geometry/.*-netbsd=geometry-positive-zeros
 geometry/.*-freebsd=geometry-positive-zeros
 geometry/i.86-.*-gnulibc=geometry-i86-gnulibc
 geometry/sparc-sun-solaris=geometry-solaris-precision
+geometry/powerpc-unknown-linux-gnu=geometry-solaris-precision
 horology/hppa=horology-no-DST-before-1970
 horology/sparc-sun-solaris=horology-solaris-1947
 abstime/sparc-sun-solaris=abstime-solaris-1947