New review comment by Chocimier on void-packages repository

https://github.com/void-linux/void-packages/pull/26547#discussion_r528247914

Comment:
There is third optional column in shlibs. 99-pkglint.sh use  `grep shlibs -e ... | while read conflictFile conflictPkg ignore; do ...` to handle that. And then interpretation of third column is needed for glibc.