Hi, x11/xfce4-gtk2-engines contains the following lines in its Makefile:

DISTNAME=       gtk-xfce-engine-${XFCE4_VERSION}
PKGNAME=        xfce4-gtk2-engine-${XFCE4_VERSION}

Note that there is no final 's' in the package name, so that when you install
the package, it's installed as 'xfce4-gtk2-engine' and not
as 'xfce4-gtk2-engines'

Is this a simple typo, or was this done for a reason? I think it's better to
keep package names as consistent as possible, which results in less confusion.

Should I file a PR?