(svn r15027) -Merge: tomatos and bananas left to be, here is NoAI for all to see.

NoAI is an API (a framework) to build your own AIs in. See:
   http://wiki.openttd.org/wiki/index.php/AI:Main_Page
 With many thanks to:
  - glx and Rubidium for their syncing, feedback and hard work
  - Yexo for his feedback, patches, and AIs which tested the system very deep
  - Morloth for his feedback and patches
  - TJIP for hosting a challenge which kept NoAI on track
  - All AI authors for testing our AI API, and all other people who helped in one way or another
-Remove: all old AIs and their cheats/hacks

src/ai/ai_config.hpp

@@ -0,0 +1,91 @@
+/* $Id$ */
+
+/** @file ai_config.hpp AIConfig stores the configuration settings of every AI. */
+
+#ifndef AI_CONFIG_HPP
+#define AI_CONFIG_HPP
+
+#include <map>
+
+#ifndef AI_HPP
+struct ltstr { bool operator()(const char *s1, const char *s2) const { return strcmp(s1, s2) < 0; } };
+#endif /* AI_HPP */
+
+class AIConfig {
+private:
+	typedef std::map<const char *, int, ltstr> SettingValueList;
+
+public:
+	AIConfig() :
+		name(NULL),
+		info(NULL)
+	{}
+	AIConfig(const AIConfig *config);
+	~AIConfig();
+
+	/**
+	 * Set another AI to be loaded in this slot.
+	 */
+	void ChangeAI(const char *name);
+
+	/**
+	 * When ever the AI Scanner is reloaded, all infos become invalid. This
+	 *  function tells AIConfig about this.
+	 * @return True if the reset was successfull, false if the AI was no longer
+	 *  found.
+	 */
+	bool ResetInfo();
+
+	/**
+	 * Get the AIInfo linked to this AIConfig.
+	 */
+	class AIInfo *GetInfo();
+
+	/**
+	 * Get the config of a company.
+	 */
+	static AIConfig *GetConfig(CompanyID company, bool forceNewgameSetting = false);
+
+	/**
+	 * Get the value of a setting for this config. It might fallback to his
+	 *  'info' to find the default value (if not set or if not-custom difficulty
+	 *  level).
+	 * @return The (default) value of the setting, or -1 if the setting was not
+	 *  found.
+	 */
+	int GetSetting(const char *name);
+
+	/**
+	 * Set the value of a setting for this config.
+	 */
+	void SetSetting(const char *name, int value);
+
+	/**
+	 * Is this config attached to an AI?
+	 */
+	bool HasAI();
+
+	/**
+	 * Get the name of the AI.
+	 */
+	const char *GetName();
+
+	/**
+	 * Convert a string which is stored in the config file or savegames to
+	 *  custom settings of this AI.
+	 */
+	void StringToSettings(const char *value);
+
+	/**
+	 * Convert the custom settings to a string that can be stored in the config
+	 *  file or savegames.
+	 */
+	void SettingsToString(char *string, int size);
+
+private:
+	const char *name;
+	class AIInfo *info;
+	SettingValueList settings;
+};
+
+#endif /* AI_CONFIG_HPP */