Remove all strtok uses and replace them by strtok_r.
Do the same for Windows builds. Cygwin builds fine with strtok_r.
Add strtok to banned function list.
coccinelle 1.0rc21 has a problem with regular expression handling.
This result in a Fatal Error when test system detects an coding
error.
This patch fixes the problem by using a simple blob inside
semantic patch instead of using a regular expression to define
the function.
It also fixes add an optimization on matching suppressing a
useless <.. ..> construction.
Fixes have been suggested by Julia Lawall.