can't build Aporia on OS X 10.9
_nimrod_ and _babel_ both cloned from Github and built on OS X 10.9 (Mavericks).

Cloned Aporia from Github and tried building by executing `babel build`, which fails with the following log:

```
Looking for gtk2 (>= 1.0)...
Dependency already satisfied.
Building aporia/aporia using c backend...
Hint: used config file '/Users/eep2ak/Nimrod/config/nimrod.cfg' [Conf]
Hint: used config file '/Users/eep2ak/funwithlangs/Aporia/aporia.nimrod.cfg' [Conf]
Hint: system [Processing]
Hint: aporia [Processing]
Hint: glib2 [Processing]
Hint: gtk2 [Processing]
Hint: atk [Processing]
Hint: pango [Processing]
Hint: gdk2pixbuf [Processing]
Hint: gdk2 [Processing]
Hint: gtksourceview [Processing]
Hint: dialogs [Processing]
Hint: os [Processing]
Hint: strutils [Processing]
Hint: parseutils [Processing]
Hint: times [Processing]
Hint: posix [Processing]
Hint: osproc [Processing]
Hint: strtabs [Processing]
Hint: hashes [Processing]
Hint: streams [Processing]
Hint: sequtils [Processing]
lib/pure/osproc.nim(268, 13) Warning: 'startCmd' is deprecated [Deprecated]
lib/pure/osproc.nim(292, 19) Warning: 'startCmd' is deprecated [Deprecated]
lib/pure/osproc.nim(300, 14) Warning: 'startCmd' is deprecated [Deprecated]
lib/pure/osproc.nim(836, 10) Warning: 'startCmd' is deprecated [Deprecated]
Hint: pegs [Processing]
Hint: unicode [Processing]
Hint: parseopt [Processing]
lib/pure/parseopt.nim(54, 34) Warning: 'quoteIfContainsWhite' is deprecated [Deprecated]
aporia.nim(12, 29) Warning: 'parseopt' is deprecated [Deprecated]
Hint: asyncio [Processing]
Hint: sockets [Processing]
Hint: unsigned [Processing]
Hint: encodings [Processing]
Hint: tables [Processing]
Hint: math [Processing]
Hint: algorithm [Processing]
Hint: settings [Processing]
Hint: utils [Processing]
Hint: AboutDialog [Processing]
Hint: CustomStatusBar [Processing]
CustomStatusBar.nim(92, 8) Hint: 'tid' is declared but not used [XDeclaredButNotUsed]
utils.nim(485, 10) Warning: 'quoteIfContainsWhite' is deprecated [Deprecated]
utils.nim(495, 14) Warning: 'quoteIfContainsWhite' is deprecated [Deprecated]
utils.nim(497, 12) Warning: 'quoteIfContainsWhite' is deprecated [Deprecated]
Hint: cfg [Processing]
Hint: parsecfg [Processing]
Hint: lexbase [Processing]
cfg.nim(55, 16) Warning: 'quoteIfContainsWhite' is deprecated [Deprecated]
cfg.nim(233, 6) Warning: 'nil' statement is deprecated; use an empty 'discard' statement instead [NilStmt]
cfg.nim(277, 6) Warning: 'nil' statement is deprecated; use an empty 'discard' statement instead [NilStmt]
cfg.nim(334, 6) Warning: 'nil' statement is deprecated; use an empty 'discard' statement instead [NilStmt]
Hint: search [Processing]
Hint: re [Processing]
Hint: pcre [Processing]
search.nim(60, 6) Hint: 'brackets' is declared but not used [XDeclaredButNotUsed]
search.nim(120, 6) Hint: 'matches' is declared but not used [XDeclaredButNotUsed]
Hint: suggest [Processing]
Hint: processes [Processing]
processes.nim(328, 58) Warning: 'poUseShell' is deprecated [Deprecated]
processes.nim(327, 28) Info: instantiation from here
processes.nim(327, 28) Info: instantiation from here
lib/pure/osproc.nim(620, 4) Error: internal error: analysis not implemented for: nkFinally
No stack traceback available
FAILURE: Execution failed with exit code 1
```

Notice the `Error: internal error: analysis not implemented for: nkFinally`. I inspected the code in _osproc.nim_ and there doesn't appear to be any `try` clause to correspond with the `finally`.
I know absolutely no nimrod yet - my intention was to set up Aporia first before trying to learn it - so I'm not really interested in attempting to fix this issue.
