Add signRecoverable to the JNI interface. #517

1. 
   ademuri commented at 11:56 pm on March 9, 2018: none

   This returns the recovery id, in addition to the signature.
2. 
   ademuri commented at 3:50 pm on March 10, 2018: none

   Looks like this still needs some work. I’m travelling this week, so I’ll look at it next week.
3. Add signRecoverable to the JNI interface.

   This returns the recovery id, in addition to the signature.

   28e6166988
4. Only test signRecovery if the recovery module is enabled 28510fdb25
5. 
   ademuri commented at 6:50 pm on March 20, 2018: none

   This is ready for review now.
6. 
   sipa commented at 8:35 pm on March 25, 2018: contributor

   @greenaddress Feel like reviewing this?
7. real-or-random cross-referenced this on Jan 7, 2020 from issue Remove Java Native Interface by jonasnick
8. 
   real-or-random commented at 11:12 am on February 10, 2020: contributor

   Closing this because we removed the JNI bindings in #682.
9. real-or-random closed this on Feb 10, 2020

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Contributors
ademuri sipa real-or-random