Fixed numerous issues that were causing errors in profiler log processing

src/log.h

Index: src/log.h
diff --git a/src/log.h b/src/log.h
index 8573d7169f1a41013cc56a01c166c4b6716ce708..bbcfa42c63b7471ddbd31cdd55d6092003676d46 100644
--- a/src/log.h
+++ b/src/log.h
@@ -167,6 +167,8 @@ class Logger {
   static void CodeCreateEvent(const char* tag, Code* code, String* name,
                               String* source, int line);
   static void CodeCreateEvent(const char* tag, Code* code, int args_count);
+  // Emits a code create event for a RegExp.
+  static void RegExpCodeCreateEvent(Code* code, String* source);
   static void CodeAllocateEvent(Code* code, Assembler* assem);
   // Emits a code move event.
   static void CodeMoveEvent(Address from, Address to);
@@ -227,7 +229,7 @@ class Logger {
   static void UncheckedStringEvent(const char* name, const char* value);
 
   // Size of buffer used for formatting log messages.
-  static const int kMessageBufferSize = 256;
+  static const int kMessageBufferSize = 2048;
 
   // Buffer used for formatting log messages. This is a singleton buffer and
   // mutex_ should be acquired before using it.