[Libguestfs] [PATCH v2 0/3] common: Add a lightweight OCaml binding for PCRE.

[Richard W.M. Jones]

v2:

- Change the OCaml code in the daemon to use PCRE instead of Str.

- Call pcre_compile2 so we can capture the error code on failure.

- Extend the test suite.

- Some other cleanups, but very minor.

Rich.