bitcoin/bitcoin — pull request #5439 by sipa (2014-12-07 14:12:09+00:00)
Title: Update libsecp256k1

Import some patches from libsecp256k1. Highlights:
* Use GCC inline assembly instead of YASM (lower dependencies, faster)
* Do large precomputations on the heap (to avoid stack overflows).
* Check results of malloc.