Upgrade snobol4 to version 1.4.1 and add `--mandir`.
Tested on Lion using llvm and clang from XCode-4.3.3.
Signed-off-by: Adam Vandenberg <flangy@gmail.com>
SNOBOL4 (StriNg Oriented and symBOlic Language) is a language for text
processing, pattern matching, and much more, first designed and
implemented at Bell Telephone Laboratories, Inc. (BTL) in the 1970's.