compute cbc location from $0. Support source files which are not in the current directory.

git-svn-id: file:///Users/aamine/c/gitwork/public/cbc/trunk@4053 1b9489fe-b721-0410-924e-b54b9192deb8

tools/diffoptimized.sh

@@ -1,13 +1,14 @@
 #!/bin/bash
 
-CBC=../bin/cbc
+CBC=$(dirname $0)/../bin/cbc
 
 for src in "$@"
 do
     if $CBC $src >/dev/null 2>&1
     then
+        asm=$(basename $src .cb).s
         echo "$src:"
-        $CBC -O -S $src -o ${src%%.cb}.s.opt &&
-        diff -u ${src%%.cb}.s ${src%%.cb}.s.opt
+        $CBC -O -S $src -o $asm.opt &&
+        diff -u $asm $asm.opt
     fi
 done