15843 automation can fix many trailing whitespace cstyle nits
Reviewed by: Andy Fiddaman <illumos@fiddaman.net>
Approved by: Dan McDonald <danmcd@mnx.io>

6776989 Custom backup script core dumping in Bourne shell /usr/bin/sh but not in Korn shell

6268998 cmd/sh and gcc don't get along
6277636 *sh* can crash if it creates too many temporary files

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