ptp: Add GNU Hurd to the list of supported platforms and fix the Solaris name
https://mesonbuild.com/Reference-tables.html#operating-system-names has the table of all supported names right now.
Fixes #583 (closed)
https://mesonbuild.com/Reference-tables.html#operating-system-names has the table of all supported names right now.
Fixes #583 (closed)