* mbedtls-2.7: (28 commits)
A different approach of signed-to-unsigned comparison
Update the copy of tests/data_files/server2-sha256.crt in certs.c
Fix bug in redirection of unit test outputs
Backport e2k support to mbedtls-2.7
Don't forget to free G, P, Q, ctr_drbg, and entropy
Regenerate server2-sha256.crt with a PrintableString issuer
Regenerate test client certificates with a PrintableString issuer
cert_write: support all hash algorithms
compat.sh: stop using allow_sha1
compat.sh: quit using SHA-1 certificates
compat.sh: enable CBC-SHA-2 suites for GnuTLS
Fix license header in pre-commit hook
Update copyright notices to use Linux Foundation guidance
Fix building on NetBSD 9.0
Remove obsolete buildbot reference in compat.sh
Fix misuse of printf in shell script
Fix added proxy command when IPv6 is used
Simplify test syntax
Fix logic error in setting client port
ssl-opt.sh: include test name in log files
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