add group file for locale functions (was part of r59627)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59643 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/doxygen/groups/funcmacro_locale.h

@@ -0,0 +1,29 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        funcmacro_locale.h
+// Purpose:     wxXLocale-enabled functions
+// Author:      wxWidgets team
+// RCS-ID:      $Id$
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+
+@defgroup group_funcmacro_locale Locale-dependent functions
+@ingroup group_funcmacro
+
+Below are a number of functions/macros which accept as last parameter a
+specific wxXLocale instance.
+
+For the documentation of function @c wxFunc_l(), please see the documentation
+of the standard @c Func() function (see e.g. http://www.cppreference.com/wiki/c/string/start)
+and keep in mind that the wxWidgets function takes as last parameter the
+locale which should be internally used for locale-dependent operations.
+
+Last, note that when the @c wxHAS_XLOCALE_SUPPORT symbol is not defined,
+then wxWidgets will provide implementations of these functions itself 
+and that they are not granted to be thread-safe (and they will work only with the
+C locale; see @ref xlocale_avail).
+
+
+*/
+