Pulled fixe from latest eigen across. Figured it was safer to patch
than to pull across whole new version of eigen.

This reverts commit fcfb392e.

Start move to single column layout for advanced parameters; Fix
crashing bug in PrimaryFlightDisplay when uas is removed and then
re-added; workaround compiler warning in GeneralBlockPanelKernel,

This reverts commit 233a1716.

Without this change, the program can not be built on Linux.

Erros casused by all of the mergedd branches are now fixed for qgroundcontrol.pro. Working on fixing the errors that now appeare in qgcunittest.pro.

Put libraries into one libs directory under qgroundcontrol. Changed the neccessary files with references to those libraries.