Modernize texts

...there is no more ICQ, MSN or AIM support in BitlBee

doc/README

@@ -125,6 +125,10 @@ got the ingenious thought in his mind while farming, to create an IRC to
 other chatnetworks gateway, we were both so excited, that we started working
 on it almost immediately. And the result is BitlBee.
 
+In the years after, Gaim was renamed to Pidgin, BitlBee got libpurple support
+allowing to use Pidgin plugins and the support for the old chatprotocols ICQ,
+MSN and AIM was finally removed from BitlBee.
+
 
 WEBSITE
 =======

doc/user-guide/Installation.xml

@@ -10,7 +10,7 @@ The latest BitlBee release is always available from <ulink
 url="https://www.bitlbee.org/">https://www.bitlbee.org/</ulink>.
 Download the package with your favorite program and unpack it: <command>tar
 xvfz bitlbee-&lt;version&gt;.tar.gz</command> where &lt;version&gt; is to be
-replaced by the version number of the BitlBee you downloaded (e.g. 0.91).
+replaced by the version number of the BitlBee you downloaded (e.g. 3.6).
 </para>
 
 </sect1>
@@ -35,9 +35,8 @@ specify them all separately, just specifying prefix (or keeping the default
 <listitem><para>config - The place where BitlBee will save all the per-user
 settings and buddy information. <filename>/var/lib/bitlbee/</filename>
 is the default value.</para></listitem>
-<listitem><para>jabber, oscar, twitter - By default, support for all
-these IM-protocols (OSCAR is the protocol used by both ICQ and AIM) will
-be compiled in. To make the binary a bit smaller, you can use these options
+<listitem><para>jabber, twitter - By default, support for all these IM-protocols
+will be compiled in. To make the binary a bit smaller, you can use these options
 to leave out support for protocols you're not planning to use.</para></listitem>
 <listitem><para>debug - Generate an unoptimized binary with debugging symbols,
 mainly useful if you want to do some debugging or help us to track down a

doc/user-guide/commands.xml

@@ -988,17 +988,6 @@
 
 	</bitlbee-setting>
 
-	<bitlbee-setting name="ignore_auth_requests" type="boolean" scope="account">
-		<default>false</default>
-
-		<description>
-			<para>
-				Only supported by OSCAR so far, you can use this setting to ignore ICQ authorization requests, which are hardly used for legitimate (i.e. non-spam) reasons anymore.
-			</para>
-		</description>
-
-	</bitlbee-setting>
-
 	<bitlbee-setting name="mail_notifications" type="boolean" scope="account">
 		<default>false</default>
 
@@ -1455,7 +1444,7 @@
 	<bitlbee-setting name="server" type="string" scope="account">
 		<description>
 			<para>
-				Can be set for Jabber- and OSCAR-connections. For Jabber, you might have to set this if the servername isn't equal to the part after the @ in the Jabber handle. For OSCAR this shouldn't be necessary anymore in recent BitlBee versions.
+				Can be set for Jabber-connections. You might have to set this if the servername isn't equal to the part after the @ in the Jabber handle.
 			</para>
 		</description>
 	</bitlbee-setting>

doc/user-guide/quickstart.xml

@@ -42,7 +42,7 @@ For instance, suppose you have a Jabber account at jabber.org with handle <empha
 </ircexample>
 
 <para>
-Other built-in IM protocols include oscar and twitter. OSCAR is the protocol used by ICQ and AOL. Some protocols may be available as plugins that you can install, such as facebook, steam, discord and omegle. And you can get even more protocols by using the libpurple variant of BitlBee.
+The other built-in IM protocol is twitter. Some protocols may be available as plugins that you can install, such as facebook, steam, discord and omegle. And you can get even more protocols by using the libpurple variant of BitlBee.
 </para>
 
 <para>