added a recommended list of things to install for cygwin on dosdows.

diff --git a/doc/cygwin_install_list.txt b/doc/cygwin_install_list.txt
new file mode 100755 (executable)
index 0000000..2b08af7
--- /dev/null
+++ b/doc/cygwin_install_list.txt
@@ -0,0 +1,46 @@
+recommended packages to install in cygwin's setup\r
+if you're going to use cygwin on windows:\r
+\r
+first, keep all the standard packages that cygwin will enable.\r
+second, add these packages to get the full recommended set...\r
+\r
+shells:\r
+  python\r
+  perl\r
+  perl-win32-gui\r
+  perl-libwin32\r
+\r
+network:\r
+  ncftp\r
+  openssh\r
+\r
+editors:\r
+  vim\r
+  gvim\r
+  emacs\r
+\r
+revision control:\r
+  git\r
+  gitk\r
+  subversion\r
+\r
+general tools:\r
+  bc\r
+  expect\r
+  util-linux\r
+  inetutils\r
+  email\r
+  mutt\r
+  unzip\r
+  zip\r
+  crypt\r
+  time\r
+\r
+build tools:\r
+  gcc4\r
+  make\r
+\r
+x window support:\r
+  xterm\r
+  xinit\r
+\r