Recommended update for gpp
This update for gpp fixes the following issues:
Update to version 2.28:
* Fixed typos in documentation (Issues #57 and #61)
* Added #sinclude meta-macro for silent includes (Issue #63)
- Submitted by Tristan Miller (psych0naut)
Fixed bugs
bnc#1108673
VUL-1: CVE-2018-17076: gpp: segmentation fault via a crafted file