[MachineOutliner][NFC] Make outlined functions have internal linkage

The linkage type on outlined functions was private before. This meant that if
you set a breakpoint in an outlined function, the debugger wouldn't be able to
give a sane name to the outlined function.

This commit changes the linkage type to internal and updates any tests that
relied on the prefixes on the names of outlined functions.
 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@329116 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed