#2 standalone and call with timeout

[HansH]

Was writing a wrapper around the librfc when I found
this library, so I have been using saprfc for now.

Included a patch which resolves:
1)When using STANDALONE the zend_printf cannot be resolved

2) Missing timeout option when using CAL_CALL.
If you use the library for a rfc_ping, you need a
timeout option.
Extended the function __cal_fce_call with a timeout
parameter. A timeout of 0 equals old functionality
Function uses 10 millisec intervals for checking,
works under the unix, not tested for windows.

Any comments are welcome.

Nice library, saved me a lot of time writing my own.

Hans Harder

[HansH]

rfccal.h diff

[HansH]

rfccal.c diff