checkpolicy: allow version of single digit

currently policy will not build if I define a module as 1

policy_module(dan,1) Fails

policy_module(dan,1.0) works

The attached patch makes the first one work.

Signed-off-by: Steve Lawrence <slawrence@tresys.com>

checkpolicy/policy_parse.y

@@ -773,6 +773,8 @@ module_def              : MODULE identifier version_identifier ';'
                         { if (define_policy(pass, 1) == -1) return -1; }
                         ;
 version_identifier      : VERSION_IDENTIFIER
+                        { if (insert_id(yytext,0)) return -1; }
+			| number
                         { if (insert_id(yytext,0)) return -1; }
                         | ipv4_addr_def /* version can look like ipv4 address */
                         ;