Centos7安装oniguruma和oniguruma-devel，解决php编译安装报错

PHP编译安装时遇到例如Package 'oniguruma', required by 'virtual:world', not found的报错，是centos7系统没有oniguruma和oniguruma-devel所致。

使用yum将rpm包安装上即可解决（为了防止链接失效，文末提供下载链接）

wget http://rpmfind.net/linux/epel/7/x86_64/Packages/o/oniguruma-6.8.2-1.el7.x86_64.rpm
wget http://rpmfind.net/linux/epel/7/x86_64/Packages/o/oniguruma-devel-6.8.2-1.el7.x86_64.rpm
yum install -y oniguruma-6.8.2-1.el7.x86_64.rpm oniguruma-devel-6.8.2-1.el7.x86_64.rpm