Installing omake with opam yielded an omake that didn't have FAM linked, thus the
useful -P option was not available. This was due to a change described here
https://wiki.ubuntu.com/NattyNarwhal/ToolchainTransition

With the given patch, omake compiles again with FAM support.
Merge pull request #1254 from seanmcl/omake

Omake patch for Ubuntu which requires linker flags after source files.