utils.bbclass: modify create_wrapper to correctly follow symlinks

This ensures you look up the symbolic link to get the full path

(From OE-Core rev: a10bd976f4cef54ac50b0c82f885c17a26e5989f)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/utils.bbclass

@@ -289,7 +289,8 @@ create_cmdline_wrapper () {
    cmdname=`basename $cmd`.real
    cat <<END >$cmd
 #!/bin/sh
-exec \`dirname \$0\`/$cmdname "\$@"
+realpath=\`readlink -fn \$0\`
+exec \`dirname \$realpath\`/$cmdname "\$@"
 END
    chmod +x $cmd
 }