[Bug target/83838] Many gcc.target/i386/indirect-thunk*.c tests FAIL

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83838

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Solaris fails these tests due to

sol2.h:#define USE_HIDDEN_LINKONCE 0

We can limit these tests to Linux only.