New rule to download libflycapture depends on the ubuntu releases as well as the arch

[tongtybj]

Since Pointgrey provides the different libraries according to the ubuntu release versions as well as machine architectures, I add additional code to check the release.

[mikepurvis]

My impression is that the library pretty much stands alone; it doesn't really have a dependence on anything in the underlying system.

Changing the version of flycapture has always been an ordeal in the past due to regressions in support for various devices. So I'm nervous to complicate things even further by having different versions of it for different Ubuntu releases, unless absolutely necessary.

[tongtybj]

I understand your opinion