vg-in-place: made sure that soft links to this script work fine too.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11521 a5019735-40e9-0310-863c-91ae7b9d1cf9

Author: bart

vg-in-place

@@ -4,6 +4,9 @@
 # $0 (the name of the file) and $PWD.
 
 dollarzero=$0
+if [ -h "${dollarzero}" ]; then
+   dollarzero=`readlink "${dollarzero}"`
+fi
 
 if [ "${dollarzero#/}" = "${dollarzero}" ];
 then