Faster implementation of integer-to-ascii conversion. I think....

src/conversions.h

Index: src/conversions.h
===================================================================
--- src/conversions.h	(revision 3813)
+++ src/conversions.h	(working copy)
@@ -102,9 +102,10 @@
 // 100 characters is enough.
 const char* DoubleToCString(double value, Vector<char> buffer);
 
-// Convert an int to a null-terminated string. The returned string is
-// located inside the buffer, but not necessarily at the start.
-const char* IntToCString(int n, Vector<char> buffer);
+// Convert an int to a null-terminated string. The returned string need
+// not be freed by the caller, but may be overwritten by a later call to
+// IntToCString.
+const char* IntToCString(int n, int* length_return);
 
 // Additional number to string conversions for the number type.
 // The caller is responsible for calling free on the returned pointer.