Feature/fs 1538 build and mark skipped tests

The remaining conditional builds are kept because they are used to build tests multiple times, with or without SuperLU, ARPACKPP or UPFPack.

Added 7 commits:

• d61e0247...e9aed386 - 5 commits from branch master
• 34748108 - [CMake] Build and mark skipped tests
• 6753e5e5 - [cleanup] Clean up includes, pre-processor code, closing CMake if's

mentioned in commit 4f5c3d1d

Status changed to merged

mentioned in issue flyspray/FS#1538 (closed)