unit_test_log rework:

   eliminated need for ::instance()
   eliminated need for << end and ...END macro
   straitend interface between log and formatters
   change compiler like formatter name
   minimized unit_test_log interface and reworked to use explicit calls


[SVN r26720]

libs/test

@@ -1 +1 @@
-Subproject commit 91ce1ccd81e3cbfcd93db2951651c9fb2741e29f
+Subproject commit adf6f1f5e724cf9ee79025c25b96a9d642f43019