Bug 195127: set the LIBPATH environment variable (used by AIX) as absolute

pathname.  It seems that AIX caches shared libraries. If another app loaded
the same shared library earlier, the cached copy of the shared library,
including the pathname with which it was loaded, will be used.  So we need
to ensure that all apps load libsoftokn3.so with an absolute pathname so
that the pathname is correct to all apps.

security/nss/cmd/shlibsign/sign.sh

@@ -13,7 +13,7 @@ if [ ${3} = "YES" ]; then
     fi
     export PATH
 else
-    LIBPATH=${1}/lib
+    LIBPATH=`(cd ${1}/lib; pwd)`
     export LIBPATH
     SHLIB_PATH=${1}/lib
     export SHLIB_PATH