Patch fixing BZ#1754816: handle EAGAIN error on socket write

Check if callback is already set

update to the latest 9.2 release
fix CVE-2018-10915

fix CVE-2017-12172

update to 9.2.23 per release notes
9-2-23.html

update to 9.2.22 per release notes
9-2-22.html

update to 9.2.21 per release notes
9-2-21.html
9-2-20.html
9-2-19.html

package libpgport.a (rhbz#1305979)

update to 9.2.18 per release notes
9-2-18.html
9-2-17.html
9-2-16.html

fix postgresql-setup to work if postgres user is set to /bin/nologin (#1122143)

update to 9.2.15 per release notes
9-2-15.html

update to 9.2.14 per release notes
9-2-14.html

update to 9.2.13 per release notes
9-2-13.html

update to 9.2.12 per release notes
9-2-12.html

update to 9.2.11 per release notes
9-2-11.html