Update findbugs from 3.0.0 to 3.0.1.

doc/manual-fo.xsl

 <?xml version='1.0'?>
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 version='1.0'
                 xmlns="http://www.w3.org/TR/xhtml1/transitional"
                 exclude-result-prefixes="#default">
 
 <!-- build.xml will substitute the real path to fo/docbook.xsl here. -->
-<xsl:import href="/Users/pugh/tools/docbook-xsl-1.76.1/fo/docbook.xsl"/>
+<xsl:import href="/Users/pugh/tools/docbook-xsl-1.78.1/fo/docbook.xsl"/>
 
 <!-- Enumerate sections. -->
 <xsl:variable name="section.autolabel">1</xsl:variable>
 
 <!-- Use graphics in admonitions -->
 <xsl:variable name="admon.graphics">1</xsl:variable>
 
 <!-- Admonition graphics are in the "manual" subdirectory. -->
 <xsl:variable name="admon.graphics.path">manual/</xsl:variable>
 
 <!-- Included graphics are also in the "manual" subdirectory. -->
 <xsl:variable name="img.src.path">manual/</xsl:variable>
 
 <!-- Default image width is 5 inches - otherwise, they become much too large.
      FIXME: for some reason, this isn't honored.  Blech.
 -->
 <xsl:variable name="default.image.width">5in</xsl:variable>
 
 <!-- Just put chapters and sect1s in the TOC. -->
 <xsl:variable name="toc.section.depth">1</xsl:variable>
 
 </xsl:stylesheet>