community/mrxvt: fix for -fno-common

Patches from Gentoo.

Fix gcc10 -fno-common

libpng patch related to http://www.libpng.org/pub/png/src/libpng-1.2.x-to-1.4.x-summary.txt
7 jobs for !15848 with community/mrxvt in 1 minute and 54 seconds
latest detached
Status Job ID Name Coverage
  Lint
passed #273021
docker-alpine x86_64
lint

00:00:19

 
  Build
failed #273026
docker-alpine ci-build aarch64
build-aarch64

00:01:26

passed #273027
docker-alpine ci-build armv7
build-armv7

00:01:32

passed #273025
docker-alpine ci-build ppc64le
build-ppc64le

00:01:08

passed #273024
docker-alpine ci-build s390x
build-s390x

00:01:10

passed #273023
docker-alpine ci-build x86
build-x86

00:00:35

passed #273022
docker-alpine ci-build x86_64
build-x86_64

00:00:49

 
Name Stage Failure
failed
build-aarch64 Build
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