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24bdf02e4e
Back up the config files at the beginning of all.sh, rather than before each component. In particular, create the backup before running cleanup for the first time. This fixes #3139 (all.sh using a config.h.bak from a previous job), and makes all.sh more robust against accidentally using a modified config.h midway through because a component messed with the backup. Use a different extension (*.all.bak rather than *.bak) for the backups. This is necessary to ensure that auxiliary scripts such as depends*.pl that make their own backup don't remove all.sh's backup, which the code from this commit does not support. Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>