Adding line ending settings to .gitattributes (#4026)

* Adding line ending settings to .gitattributes

This should make it so that cmd and bat files are always crlf and sh and
config.guess are always lf.

* Kicking this file...

* Undoing the last change

.gitattributes

@@ -1 +1,5 @@
-*       text=auto
+*       text=auto
+*.cmd text eol=crlf
+*.bat text eol=crlf
+*.sh text eol=lf
+*.guess text eol=lf