libtommath from home:snagview project

For RedHat RHEL-8 appstream run the following as root:

cd /etc/yum.repos.d/
wget https://download.opensuse.org/repositories/home:snagview/RedHat_RHEL-8_appstream/home:snagview.repo
yum install libtommath

For SLE 15 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:snagview/SLE_15/home:snagview.repo
zypper refresh
zypper install libtommath

For SLE 12 SP4 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:snagview/SLE_12_SP4/home:snagview.repo
zypper refresh
zypper install libtommath