Use '=' instead of '==' in /bin/sh scripts to avoid portability
problems.

diff --git a/tools/findfunc b/tools/findfunc
index 98fd6ce..111aaba 100755
--- a/tools/findfunc
+++ b/tools/findfunc
@@ -1,6 +1,6 @@
 #!/bin/sh
 name="$1"
-if [ "$name" == "" ] ; then
+if [ "$name" = "" ] ; then
     echo -n 'Function: '
     read name;
 fi