INDEX build optimizations - please review

[Kris Kennaway]

Pietro Cerutti wrote:
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> Pietro Cerutti wrote:
> | Kris Kennaway wrote:
> |
> | | Another important optimization is to use /rescue/sh instead of /bin/sh
> | | for index builds.  The former is statically linked and this is much
> | | faster to execute.
> |
> | True, but the for is not even guaranteed to exist (WITHOUT_RESCUE in
> | src.conf or similar).
> 
> "the for"??? err... "the file" I meant..

Yeah, I forgot to add a check for that.

Kris