autoconf from home:Star2BarryN project

For 15.7 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:Star2BarryN/15.7/home:Star2BarryN.repo
zypper refresh
zypper install autoconf

For 15.6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:Star2BarryN/15.6/home:Star2BarryN.repo
zypper refresh
zypper install autoconf

For openSUSE Leap 16.0 run the following as root:

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