Sparse LU tutorial segfaults -> moved to dev.
Moved default export to stdout.
Changed export folder path for kite carousel…

… in code generation
Default name for interim. export variable changed

… back to "acado_aux"
Fixed ASSERT() macro
Polished Gnuplot interface…

- when __NO_PLOTTING__ def is defined, we are
not plotting anything. This is introduced in the
case we run unittest.
Build system updated

- When we are building "test" target for unit tests,
__NO_PLOTTING__ def is used to prevent plotting.
Thus, ACADO_WITH_TESTING should be used with care.

- BTW: unit tests can be enabled from command
line with cake:

cmake -DACADO_WITH_TESTING=ON ..

- Multi-objective examples are not in unit tests - 
contact Filip to see whether he would like to
maintain this.

- Minor polishing…