Timers incorrectly set in la backends apply methods

[Mikael Mortensen]

The timers in most backends apply methods are initialized as, e.g.,

  Timer("Apply (matrix)");

that seems to not work. It should probably (?) be changed to

  Timer timer("Apply (matrix)");

[Prof Garth Wells]

Fix Issue #126.

→ <<cset 1d300e33f935>>