Merge bitcoin/bitcoin#30334: Update libsecp256k1 subtree to latest master

1408944d2ec9f78e62bf91a5e5a50317ba3060c5 Squashed 'src/secp256k1/' changes from 06bff6dec8..4af241b320 (fanquake)

Pull request description:

  Updates the libsecp256k1 subtree to https://github.com/bitcoin-core/secp256k1/commit/f473c959f08edcb73669142f872d2189950bc54a. This includes a number of CMake related changes, including one that prevents CMake from segfaulting when we were configuring the subtree. A number of these changes have come from the review/discussion in https://github.com/hebasto/bitcoin/pull/192:

  * https://github.com/bitcoin-core/secp256k1/pull/1529
  * https://github.com/bitcoin-core/secp256k1/pull/1532
  * https://github.com/bitcoin-core/secp256k1/pull/1535
  * https://github.com/bitcoin-core/secp256k1/pull/1543
  * https://github.com/bitcoin-core/secp256k1/pull/1545
  * https://github.com/bitcoin-core/secp256k1/pull/1546

  Also includes:

  * https://github.com/bitcoin-core/secp256k1/pull/1488
  * https://github.com/bitcoin-core/secp256k1/pull/1517
  * https://github.com/bitcoin-core/secp256k1/pull/1533
  * https://github.com/bitcoin-core/secp256k1/pull/1548
  * https://github.com/bitcoin-core/secp256k1/pull/1550

ACKs for top commit:
  achow101:
    ACK cc58e958f341d2759fbabe5c9d8cc557e17d587f
  TheCharlatan:
    ACK cc58e958f341d2759fbabe5c9d8cc557e17d587f
  hebasto:
    re-ACK cc58e958f341d2759fbabe5c9d8cc557e17d587f.
  real-or-random:
    utACK cc58e958f341d2759fbabe5c9d8cc557e17d587f

Tree-SHA512: 41409bc7f65bd17a9feb5c0455e2de2d291a25e4ce14e4a01fe25fcf9d45c64ddf55f274c17d1c86a63ab6b4870997ab79c65ec2795e5b3b49502823770c500f

0 files changed, 0 insertions, 0 deletions