Update PCRE2 to build from git
The PCRE2 library currently builds from a downloaded source tarball.
The mirror we are using is unofficial, and the source has moved to GitHub.
It should be set up to use the git source checkout instead.
The PCRE2 library currently builds from a downloaded source tarball.
The mirror we are using is unofficial, and the source has moved to GitHub.
It should be set up to use the git source checkout instead.