Added new memcheck command-line option --show-possibly-lost. Closes #201170.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11292 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/docs/xml/FAQ.xml b/docs/xml/FAQ.xml
index 9ee8ea3..983e02a 100644
--- a/docs/xml/FAQ.xml
+++ b/docs/xml/FAQ.xml
@@ -528,7 +528,10 @@
       </listitem>
       <listitem>
         <para>"possibly lost" means your program is leaking
-        memory, unless you're doing funny things with pointers.</para>
+        memory, unless you're doing funny things with pointers.
+        This is sometimes reasonable.  Use
+        <option>--show-possibly-lost=no</option> if you don't want to see
+        these reports.</para>
       </listitem>
       <listitem>
         <para>"still reachable" means your program is probably ok -- it