da1f153e5e260f1744ee1bf4f24ca3a74ffea465 Add s390x tests to travis (Elichai Turkel)
2fa65e0de94f01d502e8ace89be3c5dc963dd764 Add ci script to install on s390x (Elichai Turkel)
Pull request description:
Discovered this as part of #17402 and a conversation with gmaxwell.
You can see here that the platform is indeed BE: https://travis-ci.org/elichai/bitcoin/jobs/616656410#L36
This closes https://github.com/bitcoin/bitcoin/issues/6466
ACKs for top commit:
MarcoFalke:
ACK da1f153e5e260f1744ee1bf4f24ca3a74ffea465
Tree-SHA512: e7e94e54e220257d91b24fddc79eab2bcaaadf0b2d1e7e6872d9757808ab2541728f00b1f3ab7e343305c0e7d91bb48a17a3f9621f6fff6c9fe6cde6682de408
