Added configure and command line option --help.

auto/modules/python

@@ -9,7 +9,7 @@ shift
 for nxt_option; do
 
     case "$nxt_option" in
-        -*=*) value=`$echo "$nxt_option" | sed -e 's/[-_a-zA-Z0-9]*=//'`     ;;
+        -*=*) value=`echo "$nxt_option" | sed -e 's/[-_a-zA-Z0-9]*=//'`     ;;
            *) value="" ;;
     esac
 
@@ -21,17 +21,17 @@ for nxt_option; do
         --help)
             cat << END
 
-    --config=NAME   set python-config name
-    --module=NAME   set python module name
+    --config=FILE   set python-config filename
+    --module=NAME   set unit python module name
 
 END
             exit 0
         ;;
 
         *)
-            $echo
-            $echo $0: error: invalid Python option \"$nxt_option\"
-            $echo
+            echo
+            echo $0: error: invalid Python option \"$nxt_option\"
+            echo
             exit 1
         ;;
     esac
@@ -39,6 +39,16 @@ END
 done
 
 
+if [ ! -f $NXT_AUTOCONF_DATA ]; then
+   echo
+   echo Please run common $0 before configuring module \"$nxt_module\".
+   echo
+   exit 1
+fi
+
+. $NXT_AUTOCONF_DATA
+
+
 NXT_PYTHON_CONFIG=${NXT_PYTHON_CONFIG=python-config}
 NXT_PYTHON=${NXT_PYTHON_CONFIG%-config*}
 NXT_PYTHON_MODULE=${NXT_PYTHON_MODULE=${NXT_PYTHON##*/}}