• archivers/pecl-rar: Update from 3.0.2 to 4.0.0

Changelog:

• Merge changes made to unrar up to version 5.5.6.
• Support PHP 7.0 and PHP 7.1.
• Added functions RarEntry::getRedirType(), RarEntry::isRedirectToDirectory() and RarEntry::getRedirTarget(), as well as the following constants on RarEntry: FSREDIR_UNIXSYMLINK, FSREDIR_WINSYMLINK, FSREDIR_JUNCTION, FSREDIR_HARDLINK and FSREDIR_FILECOPY.
• Changed stat handler to return UTC time for creation, modification and access time (does not work reliably on Windows).
• Fix cloning of RarArchive being allowed.

Approved by: rene (mentor)
Differential Revision: https://reviews.freebsd.org/D11762