Fix block comments regexp

Before this commit, comments like this could not be recognized:

    /* blah blah * blah  / <- this slash failed */

ZenScript/src/main/java/stanhebben/zenscript/ZenTokener.java

@@ -95,7 +95,7 @@ public class ZenTokener extends TokenStream {
 	private static final String[] REGEXPS = {
 			"#[^\n]*[\n\\e]",
 			"//[^\n]*[\n\\e]",
-			"/\\*[^\\*]*(\\*[^/]*)*\\*/",
+			"/\\*[^\\*]*(\\*|\\*[^/\\*][^\\*]*)*\\*/",
 			"[ \t\r\n]*",
 			"[a-zA-Z_][a-zA-Z_0-9]*",
 			"\\-?(0|[1-9][0-9]*)\\.[0-9]+([eE][\\+\\-]?[0-9]+)?",