Bugfix: PXP was not build if CGI absent

CHANGES

 - Tools
    * Fixed dtd2cduce bug when handling of "FIXED" attributes
-   *
+   * Fixed bug in building: PXP was not build if GCI not present
 
 0.5.2_1
    * Fixed packaging error

Makefile.distrib

@@ -206,13 +206,16 @@ else
 endif
 
 ifeq ($(PXP),true)
+    OBJECTS += runtime/cduce_pxp.cmo
+    PACKAGES += $(PXP_PACK)
     ifeq ($(CGI),true)
       OBJECTS += runtime/cduce_pxp.cmo
-      PACKAGES += $(PXP_PACK) netcgi1
+      PACKAGES += netcgi1
       ALL_TARGET += dtd2cduce
       INSTALL_BINARIES += dtd2cduce
   endif
 endif
+
 ifeq ($(EXPAT), true)
   OBJECTS += runtime/cduce_expat.cmo
   PACKAGES += expat