Bug#699172: [patch] sh-detection cleanup

[James McCoy]

Hi Charles,

The attached patch updates the part of the sh syntax file that tries to
detect what type of shell "sh" actually is in a few ways.

1. Simplify the logic so resolve() is only called once per location that
   should be checked.

2. Fix a bug by letting g:is_kornshell instead of g:is_ksh.

3. Add recognition of dash (http://gondor.apana.org.au/~herbert/dash/,
   default /bin/sh of Debian & Ubuntu) as a shell that warrants letting
   g:is_posix.

Thanks in advance for considering these changes.

Cheers,
-- 
James
GPG Key: 4096R/331BA3DB 2011-12-05 James McCoy <jamessan at debian.org>
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