MFH: r419801

lang/php70: switch distfiles from bzip2 to xz

While here also:

• regenerate patches with make makepatch
• replace "sed" with proper ${SED}
• no longer mute ${INSTALL_DATA}

PR: 209881
Reported by: Piotr Kubaj <pkubaj@anongoth.pl>
Approved by: pi (mentor)

Approved by: ports-secteam (with hat)