wxwidgets.cfg: Added support for wxFile::ReadAll().

cfg/wxwidgets.cfg

@@ -7435,6 +7435,20 @@
       <not-uninit/>
     </arg>
   </function>
+  <!-- bool wxFile::ReadAll(wxString * str, const wxMBConv & conv = wxConvAuto())	-->
+  <function name="wxFile::ReadAll">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <returnValue type="bool"/>
+    <arg nr="1" direction="out">
+      <not-uninit/>
+      <not-null/>
+    </arg>
+    <arg nr="2" direction="in" default="wxConvAuto()">
+      <not-uninit/>
+      <valid>0:</valid>
+    </arg>
+  </function>
   <!-- size_t wxFile::Write(const void * buffer, size_t count)-->
   <function name="wxFile::Write">
     <noreturn>false</noreturn>