so here it is the code to introduce seriously debugggging classes.

so here it is the code to introduce seriously debugggging classes.
this is a first step only passdb stuff has beein "classized".

 - so what can you do?
   set debug level to:  1 poasdb:10
   that will make all the code run at debug level 1 except the code in
   passdb/* files that will run at level 10
   TODO: fix the man page

 - also smbcontrol has this nice feature so smbcontrol smbd debug 3 passdb:5
   will set every smbd to have a default log level of 3 while passdb stuff
   will be at level 5

   and so no..

  minor cosmetic fix to pdbedit is there too
(This used to be commit be5c3b3f5781ddc002ffcc98df04ab024dcef4ca)