Make 0.7 release

[stefanberger]

Release v 0.7

[stefanberger]

The following tests passed on master.next (807cc10):

• coverity scan

With swtpm 0.2 test suite:

• build and tests on i686 Fedora 27
• build and tests on x86_64 Fedora 29
• build and tests on ppc64le Ubuntu 16.04.6
• build and tests on x86_64 Ubuntu 16.04 (Travis)
• build and tests on x86_64 Ubuntu 18.04
• build and tests on OS X (Mac) (Travis)
• build and tests on ppc64 Fedora 28
• build and tests on i686 OpenBSD
• build and tests on x86_64 Centos 6.10
• build and tests on x86_64 FreeBSD 12.2
• build and tests on x86_64 DragonFly BSD
• build and tests on x86_64 NetBSD 8.4 (1 failure as expected [gnutls ecc bug])
• build and tests on x86_64 Cygwin
• build and tests on armv6l Debian 8 (raspbian) (1 failure as expected due to outdated gnutls)

[stefanberger]

Some additional tests:

• upgrading libtpms from 0.6.0 to 0.7.0 while suspended and usage of a signing key
• booting with Cleavis & Tang
• VM save / restore and PCR checking

[stefanberger]

v0.7.0 tag: https://github.com/stefanberger/libtpms/tree/v0.7.0
0.7.0 branch: https://github.com/stefanberger/libtpms/tree/stable-0.7.0