Rename DEBUG macro to LLVM_DEBUG.
    
The DEBUG() macro is very generic so it might clash with other projects.
The renaming was done as follows:
- git grep -l 'DEBUG' | xargs sed -i 's/\bDEBUG\s\?(/LLVM_DEBUG(/g'
- git diff -U0 master | ../clang/tools/clang-format/clang-format-diff.py -i -p1 -style LLVM
- Manual change to APInt
- Manually chage DOCS as regex doesn't match it.

In the transition period the DEBUG() macro is still present and aliased
to the LLVM_DEBUG() one.

Differential Revision: https://reviews.llvm.org/D43624

llvm-svn: 332240
diff --git a/llvm/lib/Target/X86/X86WinEHState.cpp b/llvm/lib/Target/X86/X86WinEHState.cpp
index 6d6dedc..dde9c73 100644
--- a/llvm/lib/Target/X86/X86WinEHState.cpp
+++ b/llvm/lib/Target/X86/X86WinEHState.cpp
@@ -695,10 +695,10 @@
       Worklist.push_back(BB);
       continue;
     }
-    DEBUG(dbgs() << "X86WinEHState: " << BB->getName()
-                 << " InitialState=" << InitialState << '\n');
-    DEBUG(dbgs() << "X86WinEHState: " << BB->getName()
-                 << " FinalState=" << FinalState << '\n');
+    LLVM_DEBUG(dbgs() << "X86WinEHState: " << BB->getName()
+                      << " InitialState=" << InitialState << '\n');
+    LLVM_DEBUG(dbgs() << "X86WinEHState: " << BB->getName()
+                      << " FinalState=" << FinalState << '\n');
     InitialStates.insert({BB, InitialState});
     FinalStates.insert({BB, FinalState});
   }
@@ -743,8 +743,8 @@
       continue;
 
     int PrevState = getPredState(FinalStates, F, ParentBaseState, BB);
-    DEBUG(dbgs() << "X86WinEHState: " << BB->getName()
-                 << " PrevState=" << PrevState << '\n');
+    LLVM_DEBUG(dbgs() << "X86WinEHState: " << BB->getName()
+                      << " PrevState=" << PrevState << '\n');
 
     for (Instruction &I : *BB) {
       CallSite CS(&I);