bitcoin/bitcoin — pull request #4120 by Mischi (2014-05-02 19:40:10+00:00)
Title: don't use sed's -i option to stay posix compliant

POSIX does not define sed's -i option. To stay as portable
as possible we should not relay on it.

Here is my suggested alternative.

http://pubs.opengroup.org/onlinepubs/9699919799/