This makes it easier for emacs users to automatically get the right
2-space indentation when they edit curl source files.
c++-mode is in there as well because Emacs can't easily know if
something is a C or C++ header.
Closes #574
--- /dev/null
+;;; Directory Local Variables
+;;; See Info node `(emacs) Directory Variables' for more information.
+
+((nil . ((indent-tabs-mode . nil)
+ (show-trailing-whitespace . t)))
+ (c-mode . ((c-basic-offset . 2)
+ ))
+ (c++-mode . ((c-basic-offset . 2)
+ ))
+ )