Revert "tree: dropped unmaintained port"

This reverts commit 4549c8d0922b8787ed220c26300ed2a58ad2c760.

tree/.footprint

@@ -0,0 +1,7 @@
+drwxr-xr-x	root/root	usr/
+drwxr-xr-x	root/root	usr/bin/
+-rwxr-xr-x	root/root	usr/bin/tree
+drwxr-xr-x	root/root	usr/share/
+drwxr-xr-x	root/root	usr/share/man/
+drwxr-xr-x	root/root	usr/share/man/man1/
+-rw-r--r--	root/root	usr/share/man/man1/tree.1.gz

tree/.signature

@@ -0,0 +1,5 @@
+untrusted comment: verify with /etc/ports/contrib.pub
+RWSagIOpLGJF3xqqs9Qmev4JZ+HD6s5TDdRpJsRGeBW3Bf2gVUMn+fSB1J7EBzz9CaXIWAcA+yBXv7P0z+XOoyiJVvQU3/EP3gI=
+SHA256 (Pkgfile) = ecedd3ad8c2d5c540341970da2e70ceec998d75a56b18195796704e273ba2b39
+SHA256 (.footprint) = be1450bbd70087ebcfedf3d6ff0b9d3d8556db51634673f3e6f84c31bfcd5a72
+SHA256 (tree-1.8.0.tgz) = 715d5d4b434321ce74706d0dd067505bb60c5ea83b5f0b3655dae40aa6f9b7c2

tree/Pkgfile

@@ -0,0 +1,20 @@
+# Description: Display directory tree
+# URL: http://mama.indstate.edu/users/ice/tree/
+# Maintainer: Jan-Michael Franz, jmf at mesecons dot net
+# Packager: Giorgio Lando, patroclo7 at gmail dot com
+# Depends on:
+
+name=tree
+version=1.8.0
+release=1
+source=(ftp://mama.indstate.edu/linux/$name/$name-$version.tgz)
+
+build () {
+  cd $name-$version
+
+  sed "s|CFLAGS=|CFLAGS=$CFLAGS |" -i Makefile
+  make
+
+  install -D -m 0755 $name $PKG/usr/bin/$name
+  install -D -m 0644 doc/$name.1 $PKG/usr/share/man/man1/$name.1
+}