Gnumeric 1.12.37 Morten: * Test suite improvements. * Improve format guessing for newly entered formulas. * Improve PERMUTATIONA for unusual arguments. [#790742] * Extend range of NT_PI. * Improve xlsx export of cell comments. [#790756] * Plug leaks. * Fix potential crash on exit. * Speed-up number theory functions. * Fix combo object icon. * Code cleanups for main binary. * Fix potential crash in gtk scroll bar bug workaround. * Avoid large stack use here and there. --------------------------------------------------------------------------