Commitfaf4726

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In isolationtester, retry after EINTR return from select(2).

Per report from Jaime Casanova. Very curious that no one else has seenthis failure ... but the code is clearly wrong as-is.

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Original file line number	Diff line number	Diff line change
`@@ -716,6 +716,8 @@ try_complete_step(Step * step, int flags)`
`716`	`716`	`ret=select(sock+1,&read_set,NULL,NULL,&timeout);`
`717`	`717`	`if (ret<0)/* error in select() */`
`718`	`718`	`{`
	`719`	`+if (errno==EINTR)`
	`720`	`+continue;`
`719`	`721`	`fprintf(stderr,"select failed: %s\n",strerror(errno));`
`720`	`722`	`exit_nicely();`
`721`	`723`	`}`

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