Create shell script on crash that allows rerunning redex under gdb
Create shell script on crash that allows rerunning redex under gdb

Summary:
Typically, when encountering a crash, I copy the redex-all command string from
the exception output and pass it into gdb. This automates that process

Reviewed By: justinjhendrick

Differential Revision: D5163496

fbshipit-source-id: 7cee430b570aebe5eb8a8eda33e3a77fb379e821

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