Move DocBook stuff out of top-level Makefile

The targets {sgml,ps,pdf,html} docs work as before, but
the handling is now completely in Documentation/DocBook/Makefile.

Documentation/DocBook/Makefile

@@ -12,17 +12,30 @@ EPS-parportbook := $(patsubst %.fig, %.eps, $(IMG-parportbook))
 PNG-parportbook := $(patsubst %.fig, %.png, $(IMG-parportbook))
 C-procfs-example = procfs_example.sgml
 
-books:	$(BOOKS)
+$(TOPDIR)/scripts/docgen: dummy
+	chmod 755 $(TOPDIR)/scripts/docgen
 
-$(BOOKS): $(TOPDIR)/scripts/docproc
+$(TOPDIR)/scripts/gen-all-syms: dummy
+	chmod 755 $(TOPDIR)/scripts/gen-all-syms
 
-.PHONY:	books ps pdf html clean mrproper
+$(TOPDIR)/scripts/kernel-doc: dummy
+	chmod 755 $(TOPDIR)/scripts/kernel-doc
 
-ps:	$(PS)
+$(TOPDIR)/scripts/docproc: dummy
+	$(MAKE) -C $(TOPDIR)/scripts docproc
+
+$(BOOKS): $(TOPDIR)/scripts/docgen $(TOPDIR)/scripts/gen-all-syms \
+	  $(TOPDIR)/scripts/kernel-doc $(TOPDIR)/scripts/docproc
+
+.PHONY:	sgmldocs psdocs pdfdocs htmldocs clean mrproper
+
+sgmldocs: $(BOOKS)
 
-pdf:	$(PDF)
+psdocs: $(PS)
 
-html:	$(HTML)
+pdfdocs: $(PDF)
+
+htmldocs: $(HTML)
 
 %.eps: %.fig
 	fig2dev -Leps $< $@
@@ -39,9 +52,6 @@ html:	$(HTML)
 	echo "</programlisting>" >> $@
 
 
-$(TOPDIR)/scripts/docproc:
-	$(MAKE) -C $(TOPDIR)/scripts docproc
-
 mousedrivers.sgml: mousedrivers.tmpl
 	$(TOPDIR)/scripts/docgen <$< >$@
 

Makefile

@@ -394,20 +394,8 @@ backup: mrproper
 	cd .. && tar cf - linux/ | gzip -9 > backup.gz
 	sync
 
-sgmldocs: 
-	chmod 755 $(TOPDIR)/scripts/docgen
-	chmod 755 $(TOPDIR)/scripts/gen-all-syms
-	chmod 755 $(TOPDIR)/scripts/kernel-doc
-	$(MAKE) -C $(TOPDIR)/Documentation/DocBook books
-
-psdocs: sgmldocs
-	$(MAKE) -C Documentation/DocBook ps
-
-pdfdocs: sgmldocs
-	$(MAKE) -C Documentation/DocBook pdf
-
-htmldocs: sgmldocs
-	$(MAKE) -C Documentation/DocBook html
+sgmldocs psdocs pdfdocs htmldocs:
+	$(MAKE) -C Documentation/DocBook $@
 
 sums:
 	find . -type f -print | sort | xargs sum > .SUMS