Revert "btl/openib: fix warnings"

This reverts commit 6e6c786b49dc9df70c87bb8348c12b6f68de173b.
Revert "Remove stale file reference"

This reverts commit 4c8fa17234bcaab07460fb12fbf826ceee4f8df2.
Revert "Merge pull request #275 from hjelmn/btlmod"

This reverts commit ccaecf0fd6c862877e6a1e2643f95fa956c87769, reversing
changes made to 6a19bf85dde5306f559f09952cf3919d97f52502.
Merge pull request #277 from hjelmn/btlmodrev

Revert btl modifications until more developers have had a chance to give input