IDE: Make "Build many modes" to always return to original mode. Issue #26797

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46347 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: add forgotten shortcut mapping. Shortcut keys don't work without it.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46348 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: Assign a mouse wheel handler to "all compiler options" ScrollBox and to controls inside it. Based on code by Sandro Cumerlato.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46349 4005530d-fff6-0310-9dd1-cebe43e6787f