Minor adjustments to reflect esis2sgml.py changes.

Added "esis" target to only generate the ESIS data.
diff --git a/Doc/tools/sgmlconv/make.rules b/Doc/tools/sgmlconv/make.rules
index 7f74fd7..029fb41 100644
--- a/Doc/tools/sgmlconv/make.rules
+++ b/Doc/tools/sgmlconv/make.rules
@@ -15,6 +15,7 @@
 
 all:	sgml
 
+esis:	$(ESISTARGETS)
 sgml:	$(SGMLTARGETS)
 xml:	$(XMLTARGETS)
 
@@ -31,7 +32,7 @@
 	$(LATEX2ESIS) $< | $(DOCFIXER) > $@
 
 .esis.sgml:
-	$(ESIS2ML) $< | $(FIXGES) > $@
+	$(ESIS2ML) --sgml --autoclose para $< | $(FIXGES) > $@
 
 .esis.xml:
 	$(ESIS2ML) --xml $< | $(FIXGES) > $@