Fix big endian linking issues

[KungFuJesus]

This code would compile but due to the way C++ handles templated types, it would look for this inlined routine to be exported at link time since the only templated types defined are Qt flavored integers.

Ideally this is generating single instruction byteswaps similar to what happens when you use compiler builtins but admittedly I never checked.

Checklist

• contribution does not duplicate one of our existing pull requests
• contribution is in a branch rebased against master
• code compiles successfully without errors
• code follows the MythTV Coding Standards
• commits are logically organised and have good commit messages

[kmdewaal]

I do appreciate the effort spent in fixing this, but it looks like this has already been fixed in master in commit 8960641 on March 23. Considering that it apparently also needs fixing in version 32, I think it is best to cherry-pick that commit into version 32.

[KungFuJesus]

Works for me

[kmdewaal]

Fixed with commit cb65c93 .