Update to upstream version 1.2.10; update maintainer mail address

Detailed log:

• Update to upstream 1.2.10; this includes an important runtime fix in gzwrite.c that produced corrupt gzip files
• New maintainer email address: lbartoletti@tuxfamily.org

While on it:

• Pet portlint

PR: 215782
Submitted by: lbartoletti@tuxfamily.org (maintainer)
MFH: 2017Q1