Eventually this should be used by every one of our CI scripts.

It was looking for object files made with the old automake
directorations, but those changed when we split up our libraries.

Fixes bug 29435; bugfix on 0.3.5.1-alpha.

Supports bisection on 0.3.4 and earlier.
Recommend that users copy the script before bisecting.

Implements ticket 27211.

Part of 26979.

To avoid future duplicates.

Part of 26979.

Part of 26979.

Part of 26979.

That's what git does for tor.

Part of 26979.

Part of 26979.

Part of 26979.

To avoid future duplicates.

Part of 26979.

Part of 26979.

Part of 26979.

That's what git does for tor.

Part of 26979.

Part of 26979.

Someday people might be glad I did.

This is a very gentle commit that just lays the groundwork in the
build system: it puts the include files to build libtor-app.a into
src/core, and to build the tor executable into src/app.  The
executable is now "src/app/tor".