nsIModule in Firefox 1.5

 
 Module load management
 
 @param aCompMgr  : The global component manager

 @return indicates to the caller if the module can be unloaded.
 		Returning PR_TRUE isn't a guarantee that the module will be
		unloaded. It constitues only willingness of the module to be
		unloaded.  It is very important to ensure that no outstanding 
       references to the module's code/data exist before returning 
       PR_TRUE. 
		Returning PR_FALSE guaratees that the module wont be unloaded.

 
 Object Instance Creation

 Obtains a Class Object from a nsIModule for a given CID and IID pair.  
 This class object can either be query to a nsIFactory or a may be 
 query to a nsIClassInfo.

 @param aCompMgr  : The global component manager
 @param aClass    : ClassID of object instance requested
 @param aIID      : IID of interface requested
 

 One time registration callback

 When the nsIModule is discovered, this method will be
 called so that any setup registration can be preformed.

 @param aCompMgr  : The global component manager
 @param aLocation : The location of the nsIModule on disk
 @param aLoaderStr: Opaque loader specific string
 @param aType     : Loader Type being used to load this module 

 One time unregistration callback

 When the nsIModule is being unregistered, this method will be
 called so that any unregistration can be preformed

 @param aCompMgr   : The global component manager
 @param aLocation  : The location of the nsIModule on disk
 @param aLoaderStr : Opaque loader specific string