Add the ability to disable individual log categories, rather
than just the entire log channel.

Add checks, where appropriate, to make sure a log channel/category has 
not been disabled before attempting to write to it.




git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@117715 91177308-0d34-0410-b5e6-96231b3b80d8
30 files changed