Remove 'locale' parameter from all callbacks

The locale parameter was a mistake, because it puts extra needless
burden upon the module developer to have to handle this variable for
each and every single callback function.  The parameter is being removed
in favor of a single centralized module callback function that
specifically updates locale information for a module only when needed.

libobs/obs-encoder.h

@@ -102,10 +102,9 @@ struct obs_encoder_info {
 	/**
 	 * Gets the full translated name of this encoder
 	 *
-	 * @param  locale  Locale to use for translation
 	 * @return         Translated name of the encoder
 	 */
-	const char *(*getname)(const char *locale);
+	const char *(*getname)(void);
 
 	/**
 	 * Creates the encoder with the specified settings
@@ -155,10 +154,9 @@ struct obs_encoder_info {
 	/** 
 	 * Gets the property information of this encoder
 	 *
-	 * @param  locale  The locale to translate with
 	 * @return         The properties data
 	 */
-	obs_properties_t (*properties)(const char *locale);
+	obs_properties_t (*properties)(void);
 
 	/**
 	 * Updates the settings for this encoder (usually used for things like