Feature Request: Support macro-like defines

[OmerMor]

The define statements in Sierra's SCI behaved more like c-style macros.

Here's an example from SMOOPER.SC:
(define HEADINGNORTH (or (<= theHeading 45 ) (> theHeading 315)))

Here's Sierra's documentation for define statements:

define:

The define statement allows you to define a symbol which will stand for a
string of text:

 (define symbol lots of text)

will replace symbol, wherever it is encountered as a token, with lots of
text and then continue scanning at the beginning of the replacement text.
Thus, if we write

 (define symbol some text)
 (define some even more)

then

 (symbol)

will become

 (some text)

which then becomes

 (even more text)

Original request from the sciprogramming.com forums:
http://sciprogramming.com/community/index.php?topic=1420.msg12238#msg12238