Rename the sgml-primer directory to xml-primer, which is what it is.

svn path=/head/; revision=42067

en_US.ISO8859-1/books/fdp-primer/Makefile

@@ -25,7 +25,7 @@ SRCS+= psgml-mode/chapter.xml
 SRCS+= see-also/chapter.xml
 SRCS+= xhtml-markup/chapter.xml
 SRCS+= docbook-markup/chapter.xml
-SRCS+= sgml-primer/chapter.xml
+SRCS+= xml-primer/chapter.xml
 SRCS+= stylesheets/chapter.xml
 SRCS+= structure/chapter.xml
 SRCS+= doc-build/chapter.xml

en_US.ISO8859-1/books/fdp-primer/chapters.ent

@@ -11,7 +11,7 @@
 -->
 
 <!ENTITY chap.overview		SYSTEM "overview/chapter.xml">
-<!ENTITY chap.xml-primer	SYSTEM "sgml-primer/chapter.xml">
+<!ENTITY chap.xml-primer	SYSTEM "xml-primer/chapter.xml">
 <!ENTITY chap.tools		SYSTEM "tools/chapter.xml">
 <!ENTITY chap.xhtml-markup      SYSTEM "xhtml-markup/chapter.xml">
 <!ENTITY chap.docbook-markup    SYSTEM "docbook-markup/chapter.xml">