Avoided the use of two test decorators with xfail/xpass logic in the same test.

- Used xfail and skip, temporarily, while resolving bugzilla #15671.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@182159 91177308-0d34-0410-b5e6-96231b3b80d8
Added a few linux build configure/make examples.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@182160 91177308-0d34-0410-b5e6-96231b3b80d8