Add AIDirPicker and use it. Remove indra/newview/ll{dir,file}picker.{h,cpp}.

Also removed some code from the Mac/windows code in
indra/plugins/filepicker/llfilepicker.cpp that shouldn't
be in there anymore (send_agent_pause/resume and updating
the LLFrameTimer stuff).

indra/plugins/filepicker/lldirpicker.h

@@ -0,0 +1,110 @@
+/** 
+ * @dir lldirpicker.h
+ * @brief OS-specific dir picker
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+// OS specific dir selection dialog. This is implemented as a
+// singleton class, so call the instance() method to get the working
+// instance. 
+
+#ifndef LL_LLDIRPICKER_H
+#define LL_LLDIRPICKER_H
+
+#include "stdtypes.h"
+
+#if LL_DARWIN
+#include <Carbon/Carbon.h>
+
+// AssertMacros.h does bad things.
+#undef verify
+#undef check
+#undef require
+
+#include <vector>
+#include "llstring.h"
+
+#endif
+
+// Need commdlg.h for OPENDIRNAMEA
+#ifdef LL_WINDOWS
+#include <commdlg.h>
+#endif
+
+#if LL_LINUX || LL_SOLARIS
+#include "llfilepicker.h"
+#endif
+
+class LLDirPicker
+#if LL_LINUX || LL_SOLARIS
+	// On Linux we just implement LLDirPicker on top of LLFilePickerBase
+	: public LLFilePickerBase
+#endif
+{
+public:
+	// calling this before main() is undefined
+	static LLDirPicker& instance( void ) { return sInstance; }
+
+	BOOL getDir(std::string* filename);
+	std::string getDirName();
+
+	// clear any lists of buffers or whatever, and make sure the dir
+	// picker isn't locked.
+	void reset();
+
+private:
+	enum
+	{
+		SINGLE_DIRNAME_BUFFER_SIZE = 1024,
+		//DIRNAME_BUFFER_SIZE = 65536
+		DIRNAME_BUFFER_SIZE = 65000 
+	};
+	
+	void buildDirname( void );
+
+#if LL_DARWIN
+	NavDialogCreationOptions mNavOptions;
+	static pascal void doNavCallbackEvent(NavEventCallbackMessage callBackSelector,
+										 NavCBRecPtr callBackParms, void* callBackUD);
+	OSStatus	doNavChooseDialog();
+	
+#endif
+
+	std::string* mFileName;
+	std::string  mDir;
+	BOOL mLocked;
+
+	static LLDirPicker sInstance;
+	
+private:
+	LLDirPicker();
+	~LLDirPicker();
+};
+
+#endif