[backport] build: Avoid secp256k1.h include from system #20505

1. 
   dergoegge commented at 8:44 AM on November 26, 2020: member

   Backports #20469 to the 0.21 branch.

2. build: Avoid secp256k1.h include from system

   GitHub-Pull: #20469
   Rebase-From: e95aaefe2540cb76969818fcc2ff77d33448ed5a

   01b647b1a2
3. fanquake added the label Backport on Nov 26, 2020
4. fanquake added the label Build system on Nov 26, 2020
5. hebasto approved
6. 
   hebasto commented at 2:50 PM on November 26, 2020: member

   ACK 01b647b1a20bbf1de2f5f4624c34b554ad3790f2, I have reviewed the code and it looks OK, I agree it can be merged.

7. pedromadureira000 approved
8. 
   pedromadureira000 commented at 7:51 PM on November 28, 2020: none

   LGTM

9. jonasschnelli requested review from luke-jr on Dec 1, 2020
10. luke-jr approved
11. 
    luke-jr commented at 3:40 PM on December 1, 2020: member

    utACK

12. MarcoFalke added this to the milestone 0.21.0 on Dec 1, 2020
13. fanquake merged this on Dec 2, 2020
14. fanquake closed this on Dec 2, 2020

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15. DrahtBot locked this on Feb 15, 2022

Milestone
0.21.0