Logging framework update and mass Log::ID renaming.

- Log path's are generated in the scripting land
  now.  The default Log stream ID to path string
  mapping works like this:
    - Notice::LOG -> "notice"
    - Notice::POLICY_LOG -> "notice_policy"
    - TestModule::LOG -> "test_module"

- Logging streams updated across all of the shipped
  scripts to be more user friendly.  Instead of
  the logging stream ID HTTP::HTTP, we now have
  HTTP::LOG, etc.

- The priorities on some bro_init handlers have
  been adjusted to make the process of applying
  filters or disabling streams easier for users.

testing/btest/scripts/base/frameworks/logging/vec.bro

@@ -5,7 +5,7 @@
 module SSH;
 
 export {
-	redef enum Log::ID += { SSH };
+	redef enum Log::ID += { LOG };
 
 	type Log: record {
         vec: vector of string &log;
@@ -14,14 +14,14 @@ export {
 
 event bro_init()
 {
-	Log::create_stream(SSH, [$columns=Log]);
+	Log::create_stream(SSH::LOG, [$columns=Log]);
 
     local v: vector of string;
 
 	v[1] = "2";
 	v[4] = "5";
 
-	Log::write(SSH, [$vec=v]);
+	Log::write(SSH::LOG, [$vec=v]);
 }