changelog: https://irssi.org/2022/07/17/irssi-1.4.2-released/ - switches to meson - restores perl ${MACHINE_ARCH} paths by removing -Dwith-perl-lib - uses SUBST_CMD, meson.build patch and post-install snippet to configure the port to use /etc/irssi/ and install sample configuration files to share/examples/irssi/ - add devel/glib2 to LIB_DEPENDS-otr and regen WANTLIB feedback from and ok sthen@