Add finch package

packages/finch.rb

+require 'package'
+
+class Finch < Package
+  description 'Finch is a chat program which lets you log in to accounts on multiple chat networks simultaneously.'
+  homepage 'http://pidgin.im/'
+  version '2.12.0'
+  source_url 'https://downloads.sourceforge.net/project/pidgin/Pidgin/2.12.0/pidgin-2.12.0.tar.bz2'
+  source_sha1 '38f48c48978425b86fc9f4e8ba08216ff379451b'
+
+  depends_on 'glib'
+  depends_on 'ncursesw'
+  depends_on 'tcl'
+
+  def self.build
+    system "sed -i 's,/usr/include,/usr/local/include,g' configure"
+    system './configure \
+            --disable-avahi \
+            --disable-dbus \
+            --disable-gtkui \
+            --disable-nls \
+            --disable-gstreamer \
+            --disable-gstreamer-video \
+            --disable-gstreamer-interfaces \
+            --disable-idn \
+            --disable-meanwhile \
+            --disable-screensaver \
+            --disable-sm \
+            --disable-tk \
+            --disable-vv \
+            --enable-consoleui=yes \
+            --includedir=/usr/local/include \
+            --oldincludedir=/usr/local/include \
+            --without-x'
+    system 'make'
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end