Output the correct line number in the error message for compilation failures during bootstrapping

BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/10735024
Patch from Jochen Eisinger <jochen@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12026 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/handles.h

@@ -246,7 +246,7 @@ Handle<FixedArray> AddKeysFromJSArray(Handle<FixedArray>,
 // if none exists.
 Handle<JSValue> GetScriptWrapper(Handle<Script> script);
 
-// Script line number computations.
+// Script line number computations. Note that the line number is zero-based.
 void InitScriptLineEnds(Handle<Script> script);
 // For string calculates an array of line end positions. If the string
 // does not end with a new line character, this character may optionally be

src/isolate.cc

@@ -1136,12 +1136,12 @@ void Isolate::DoThrow(Object* exception, MessageLocation* location) {
             "Extension or internal compilation error: %s in %s at line %d.\n",
             *String::cast(exception)->ToCString(),
             *String::cast(location->script()->name())->ToCString(),
-            line_number);
+            line_number + 1);
       } else {
         OS::PrintError(
             "Extension or internal compilation error in %s at line %d.\n",
             *String::cast(location->script()->name())->ToCString(),
-            line_number);
+            line_number + 1);
       }
     }
   }