Better support for linux

I made it not solve a Dependencies in principle in Linux.
I leave a Fix of a Dependencies to the package manager of operating system.
Add message for failure to build.

At Linux or BSD、I change into the error message in consideration of a possibility that the Software which depends is not installed.
Add 'LANG=C;' to each commands.

Since there is a Software in which an install fails if it is not LANG=C, I add uniformly.

e.g. vim, Groff
Better linux support for tree.