added a state field to htrd for determining if it's waiting for more feeds.

enhanced how it can determine client's half-close
changed how to compose cgi environment variables
fixed a few bugs for various edge cases.

qse/include/qse/net/htrd.h

@@ -97,6 +97,7 @@ struct qse_htrd_t
 	} fed; 
 
 	qse_htre_t re;
+	int        clean;
 };
 
 #ifdef __cplusplus

qse/include/qse/net/httpd.h

@@ -59,7 +59,8 @@ typedef enum qse_httpd_errnum_t qse_httpd_errnum_t;
 enum qse_httpd_option_t
 {
 	QSE_HTTPD_CGIERRTONUL  = (1 << 0),
-	QSE_HTTPD_CGINOCLOEXEC = (1 << 1)
+	QSE_HTTPD_CGINOCLOEXEC = (1 << 1),
+	QSE_HTTPD_CGINOCHUNKED = (1 << 2) 
 };
 
 typedef struct qse_httpd_stat_t qse_httpd_stat_t;