Make xml2dot.xsl and --graph produce the same output.

* data/xslt/xml2dot.xsl (xsl:template match="rule"): Use a `
'
instead of a `\n'.  That is, don't add escapes yet or they'll be doubly
escaped later.
(xsl:template name="output-node"): Use the new escape template instead
of the string-replace template directly.
(xsl:template name="output-edge"): Likewise.
(xsl:template name="escape"): New, escapes backslashes and newlines in
addition to quotation marks.
* src/graphviz.c (start_graph, output_node, output_edge): Add
whitespace to output for legibility.

Make xml2text.xsl and --report produce the same output, and remove the
XML "conflicts" element since a conflict summary is easily extracted
from the automaton.
* data/xslt/bison.xsl: New.
(xsl:template match="state" mode="bison:count-conflicts): New.
* data/xslt/xml2text.xsl: Import bison.xsl.
(xsl:template match="bison-xml-report"): Instead of styling the
"conflicts" element, style the "automaton" element with mode
"conflicts".  Unlike the former, the latter lists S/R and R/R
conflicts for a state on the same line.
(xsl:template match="conflicts"): Remove.
(xsl:template match="conflict"): Remove.
(xsl:template match="terminal"): Line-wrap the list of rules in which
the terminal is used.
(xsl:template match="nonterminal"): Likewise for nonterminals.
(xsl:template match="automaton" mode="conflicts"): New.
(xsl:template match="state" mode="conflicts"): New.
(xsl:template name="line-wrap"): New.
(xsl:template name="ws-search"): New.
* data/xslt/xml2xhtml.xsl: Import bison.xsl.
(xsl:template match="bison-xml-report"): Instead of styling the
"conflicts" element, style the "automaton" element with mode
"conflicts."
(xsl:template match="conflicts"): Remove.
(xsl:template match="conflict"): Remove.
(xsl:template match="automaton" mode="conflicts"): New.
(xsl:template match="state" mode="conflicts): New.
* src/conflicts.c (conflicts_output_xml): Remove.
* src/conflicts.h (conflicts_output_xml): Remove prototype.
* src/print-xml.c (print_xml): Don't invoke conflicts_output_xml.
* src/print.c (print_grammar): Consistently wrap at the 66th column so
the corresponding XSLT is easier.  Also, never wrap between a word and
the comma that follows it.

data/xslt/xml2xhtml.xsl

@@ -26,7 +26,10 @@
 
 <xsl:stylesheet version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-  xmlns="http://www.w3.org/1999/xhtml">
+  xmlns="http://www.w3.org/1999/xhtml"
+  xmlns:bison="http://www.gnu.org/software/bison/">
+
+<xsl:import href="bison.xsl"/>
 
 <xsl:output method="xml" encoding="UTF-8"
 	    doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN"
@@ -123,7 +126,7 @@
   </ul>
   <xsl:apply-templates select="reductions"/>
   <xsl:apply-templates select="rules-never-reduced"/>
-  <xsl:apply-templates select="conflicts"/>
+  <xsl:apply-templates select="automaton" mode="conflicts"/>
   <xsl:apply-templates select="grammar"/>
   <xsl:apply-templates select="automaton"/>
 </xsl:template>
@@ -206,32 +209,52 @@
   </xsl:if>
 </xsl:template>
 
-<xsl:template match="conflicts">
+<xsl:template match="automaton" mode="conflicts">
   <h2>
     <a name="conflicts"/>
     <xsl:text> Conflicts</xsl:text>
   </h2>
   <xsl:text>&#10;&#10;</xsl:text>
-  <xsl:if test="conflict">
+  <xsl:variable name="conflict-report">
+    <xsl:apply-templates select="state" mode="conflicts"/>
+  </xsl:variable>
+  <xsl:if test="string-length($conflict-report) != 0">
     <p class="pre">
-      <xsl:apply-templates select="conflict"/>
+      <xsl:copy-of select="$conflict-report"/>
       <xsl:text>&#10;&#10;</xsl:text>
     </p>
   </xsl:if>
 </xsl:template>
 
-<xsl:template match="conflict">
-  <a>
-    <xsl:attribute name="href">
-      <xsl:value-of select="concat('#state_', @state)"/>
-    </xsl:attribute>
-    <xsl:value-of select="concat('State ', @state)"/>
-  </a>
-  <xsl:text> conflicts: </xsl:text>
-  <xsl:value-of select="@num"/>
-  <xsl:text> </xsl:text>
-  <xsl:value-of select="@type"/>
-  <xsl:text>&#10;</xsl:text>
+<xsl:template match="state" mode="conflicts">
+  <xsl:variable name="conflict-counts">
+    <xsl:apply-templates select="." mode="bison:count-conflicts" />
+  </xsl:variable>
+  <xsl:variable
+    name="sr-count" select="substring-before($conflict-counts, ',')"
+  />
+  <xsl:variable
+    name="rr-count" select="substring-after($conflict-counts, ',')"
+  />
+  <xsl:if test="$sr-count > 0 or $rr-count > 0">
+    <a>
+      <xsl:attribute name="href">
+        <xsl:value-of select="concat('#state_', @number)"/>
+      </xsl:attribute>
+      <xsl:value-of select="concat('State ', @number)"/>
+    </a>
+    <xsl:text> conflicts:</xsl:text>
+    <xsl:if test="$sr-count > 0">
+      <xsl:value-of select="concat(' ', $sr-count, ' shift/reduce')"/>
+      <xsl:if test="$rr-count > 0">
+        <xsl:value-of select="(',')"/>
+      </xsl:if>
+    </xsl:if>
+    <xsl:if test="$rr-count > 0">
+      <xsl:value-of select="concat(' ', $rr-count, ' reduce/reduce')"/>
+    </xsl:if>
+    <xsl:value-of select="'&#10;'"/>
+  </xsl:if>
 </xsl:template>
 
 <xsl:template match="grammar">