complibs/ppl: fix PPL build with GMP 5.x.x

From http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commitdiff;h=9c19bc2b318a35016e0189f9552c98910be37f53

Author: Roberto Bagnara <bagnara@cs.unipr.it>
Revision log: Added support for GMP 5.0.

Adapted manually to match and not having to re-generate the configure script.

Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>

diff -durN gcc-3.4.6.orig/gcc/config/mips/t-linux gcc-3.4.6/gcc/config/mips/t-linux

--- gcc-3.4.6.orig/gcc/config/mips/t-linux	1970-01-01 01:00:00.000000000 +0100

+++ gcc-3.4.6/gcc/config/mips/t-linux	2007-08-15 23:08:15.000000000 +0200

@@ -0,0 +1,3 @@

+# Compile crtbegin/end with xgot so it works for both

+# normal and large GOTs.

+CRTSTUFF_T_CFLAGS = -mxgot