Fix -Ttext-segment configure check.

Explicitly test together with -static -nodefaultlibs -nostartfiles to mimic
what the tools linking script does. At least on s390 the test might fail for
a non-static AC_LINK, while it does work when using those other flags too.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13371 a5019735-40e9-0310-863c-91ae7b9d1cf9