[New Package] tcsh (#4903)

packages/tcsh.rb

+require 'package'
+
+class Tcsh < Package
+  description 'tcsh is a csh compatible shell with file name completion and command line editing.'
+  homepage 'https://www.tcsh.org/'
+  version '6.22.03'
+  compatibility 'all'
+  source_url 'https://astron.com/pub/tcsh/tcsh-6.22.03.tar.gz'
+  source_sha256 'be2cfd653d2a0c7f506d2dd14c12324ba749bd484037be6df44a3973f52262b7'
+
+  def self.build
+    system "./configure #{CREW_OPTIONS}"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+
+  def self.check
+    system "make", "check"
+  end
+end