Do not reassign debug-only flag in release mode.

BUG=1871
TEST=

Review URL: http://codereview.chromium.org/9021011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10294 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/flag-definitions.h

@@ -564,8 +564,10 @@ DEFINE_implication(print_all_code, print_unopt_code)
 DEFINE_implication(print_all_code, print_code_verbose)
 DEFINE_implication(print_all_code, print_builtin_code)
 DEFINE_implication(print_all_code, print_code_stubs)
-DEFINE_implication(print_all_code, trace_codegen)
 DEFINE_implication(print_all_code, code_comments)
+#ifdef DEBUG
+DEFINE_implication(print_all_code, trace_codegen)
+#endif
 #endif
 
 // Cleanup...