Add LibUnwind as a dependency of glog::glog (#38)

[Atry]

Summary: X-link: https://github.com/fairinternal/AIRStore/pull/38

LibUnwind is a dependency of glog according to objdump. This diff adds ${LIBUNWIND_LIBRARY} to the CMake imported library glog::glog as an element in the IMPORTED_LINK_INTERFACE_LIBRARIES property.

Without this diff, there will be a linker error like this:

/usr/bin/ld: /usr/lib/x86_64-linux-gnu/libglog.so: undefined reference to symbol '_Ux86_64_getcontext'
//usr/lib/x86_64-linux-gnu/libunwind.so.8: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status

Differential Revision: D39340650

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This pull request was exported from Phabricator. Differential Revision: D39340650

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This pull request has been automatically closed it has not had recent activity. If you'd still like this PR merged, please feel free to reopen it, make sure you've addressed reviewer comments, and rebase on the latest main. Thank you for your contributions!