Part of our "all parsers need unit tests" effort, given the multiple recent CVEs that have come out of parser bugs.

Specifically:

• procparser::parseGenericStats()
• MountRecord::parseLine()
• LinuxSysHelper
• ProcessInfo::SystemInfo::collectSystemInfo() in processinfo_solaris.cpp

Note that there is also some "sysctl binary output to integer value" conversion in processinfo for osx and freebsd, but I suspect the combination of simple direct conversion and non-production platforms pushes that out of scope.