[Developers] Suggestion: New API CCTK_Announce

[Jian Tao]

>Erik proposed a new API
>>
>> 	CCTK_Announce ("keyword", "value")
>>
>
>We might also add a "how important is this?" integer argument, perhaps
>with semantics similar to those of the similar argument to CCTK_VWarn().
>This would help distinguish important announcements from less important
>stuff...

Yes, the problem could be solved by introducing "levels" for CCTK_INFO.

We can set the default INFO level to be zero and users can implement their 
own routines to take care of other levels of INFO by using callback mechanism.
 

Jian