Disable pagination on gdb startup

[davidwelch158]

Summary of changes

Disable pagination on gdb startup. Otherwise the GUI can't accept commands while gdb is waiting for the user to press enter to continue. Also since the gdb window has scrollbars pagination seems pointless.

Test plan

Test suite run successfully.
You can see the difference with a command like gdbgui -g '/usr/bin/gdb -ex "help breakpoints"'

[bjorn3]

Pagination is still useful for when for example 50000 items would be printed. Without pagination the console would either overflow or it would be hard to find what was immediately before the command that printed 50000 items.

[cs01]

Pagination is still useful for when for example 50000 items would be printed. Without pagination the console would either overflow or it would be hard to find what was immediately before the command that printed 50000 items.

I tend to agree with this. I can see how it might be annoying at startup if there is pagination from gdb's initial output, but usability might suffer in certain real world scenarios during debugging. If startup is the main annoyance for you, maybe gdbgui -g 'gdb -q' would suffice?

[cs01]

And thank you for your patience on my reply to this PR, I have been unable to give much attention to work for a few months.

[cs01]

After thinking about this some more, I am going to merge this because I want to optimize for the most common user scenarios. I think it's more common to have pagination be an annoyance than a help, so it can be turned off by default.