Ettercap/ettercap — pull request #441 by elfring (2013-12-30 15:46:48+00:00)
Title: Bug #436: Include guards became unique.

Include guards prevent the multiple inclusion of header files only correctly if the chosen identifiers are different from others with such a functionality.
The probability for name clashes can be reduced by the addition of the project name as a prefix and a kind of universally unique identifier as a suffix.

A few suggestions were taken into account from a previous discussion.