Clarify type of a few INI values (#4347)

Author: jimwins

appendices/ini.core.xml

@@ -1495,44 +1495,44 @@ include_path = ".:${USER}/pear/php"
        </note>
       </listitem>
      </varlistentry>
-     
+
      <varlistentry xml:id="ini.cgi.rfc2616-headers">
       <term>
        <parameter>cgi.rfc2616_headers</parameter>
-       <type>int</type>
+       <type>bool</type>
       </term>
       <listitem>
       <para>
         Tells PHP what type of headers to use when sending HTTP response
-        code. If it's set to 0, PHP sends a <link xlink:href="&url.rfc;3875">RFC 3875</link> 
-        "Status:" header that is supported by Apache and other web servers. When this option 
-        is set to 1, PHP will send <link xlink:href="&url.rfc;2616">RFC 2616</link> compliant
-        headers.  
+        code. If it is disabled, PHP sends a <link xlink:href="&url.rfc;3875">RFC 3875</link>
+        "Status:" header that is supported by Apache and other web servers. When this option
+        is enabled, PHP will send <link xlink:href="&url.rfc;2616">RFC 2616</link> compliant
+        headers.
        </para>
        <para>
         If this option is enabled, and you are running PHP in a CGI environment (e.g. PHP-FPM)
-        you should not use standard RFC 2616 style HTTP status response headers, you should 
-        instead use their RFC 3875 equivalent e.g. instead of header("HTTP/1.0 404 Not found"); 
+        you should not use standard RFC 2616 style HTTP status response headers, you should
+        instead use their RFC 3875 equivalent e.g. instead of header("HTTP/1.0 404 Not found");
         you should use header("Status: 404 Not Found");
        </para>
        <para>
-        Leave it set to 0 unless you know what you're doing.
+        Leave it disabled unless you know what you're doing.
        </para>
       </listitem>
      </varlistentry>
-     
+
      <varlistentry xml:id="ini.fastcgi.impersonate">
       <term>
        <parameter>fastcgi.impersonate</parameter>
-       <type>string</type>
+       <type>bool</type>
       </term>
       <listitem>
        <para>
         FastCGI under IIS (on WINNT based OS) supports the ability to impersonate
         security tokens of the calling client. This allows IIS to define the
         security context that the request runs under. mod_fastcgi under Apache
         does not currently support this feature (03/17/2002)
-        Set to 1 if running under IIS. Default is zero.
+        Enable if running under IIS. Default is disabled.
        </para>
       </listitem>
      </varlistentry>

reference/mysqli/ini.xml

@@ -106,7 +106,7 @@
   <varlistentry xml:id="ini.mysqli.allow-local-infile">
    <term>
     <parameter>mysqli.allow_local_infile</parameter>
-    <type>int</type>
+    <type>bool</type>
    </term>
    <listitem>
     <para>
@@ -132,7 +132,7 @@
   <varlistentry xml:id="ini.mysqli.allow-persistent">
    <term>
     <parameter>mysqli.allow_persistent</parameter>
-    <type>int</type>
+    <type>bool</type>
    </term>
    <listitem>
     <para>