Re: [HACKERS] Regression Test fail to run if PLPGSQL in template1

> I decided to look at some system statistics (DISK IO to be specific), so I
> reran the regression test on my RH5.2 box.  I was surprised when it failed
> after createlang was called for plpgsql.  It should be a quick fix for Jan.
> Either fix createlang to exit with a 0 status on language already installed:
> 143c143
> <       exit 1
> ---
> >       exit 0
> 
> Or fix it to exit with some other status and test for that status in the
> Regression GNUMakefile.

createlang now returns 2 for languages already exists, and regression
now allows 2 as a valid return value for createlang.  Please test.

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