#598 ctrl+tab not mapped to page change

[eemeli]

Using Dev-C++ 4.9.9.2 on WinXP SP2.

The key combination ctrl+tab is not and cannot be
mapped to changing the current open file. This is the
standard Windows UI function for the command.

Currently F5 and F6 are mapped to Window:Previous and
Window:Next, instead of ctrl+shift+tab and ctrl+tab.
Tools:Configure shortcuts does not allow the tab
character to be used in any shortcuts.

To add confusion, ctrl+tab is currently mapped to
changing the page in some of the windows in Dev-C++
(but not all). It works for example in the
Search:Find... dialog, but not in Tools:Compiler options.

Also, instead of doing nothing, ctrl+tab and
ctrl+shift+tab currently indent and outdent the
selected line(s) if any text is selected.