do-release: store git-reversion commands in temp file
do-release: store git-reversion commands in temp file

This avoids losing them when clearing the screen

This is thoroughly UNtested.

Signed-off-by: Olivier Mehani <9858fe98d2c7f5f35e0d2a08f134cfc58afd42d3@nicta.com.au>

mytestbed/oml,mytestbed/oml,mytestbed/oml,mytestbed/oml,mytestbed/oml