Install ibus-bogo by default

[lewtds]

This is how we are going to do it:

• install ibus-bogo using some kind of hook in the buildscript

But that's not enough. When logged in, by default, no input method program (i.e. ibus) is configured for en_US nor vi_VN locale. That's why we have to setup im-switch. I figured the following out from its manpage:

• Fork /etc/X11/xinit/xinput.d/ibus to /etc/X11/xinit/xinput.d/ibus-xim changing QT_IM_MODULE to xim
• Use Debian's alternative system to set /etc/alternatives/xinput-all_ALL to be /etc/X11/xinit/xinput.d/ibus-xim

The second step could be changed so that we

• create a new file at /etc/alternatives/xinput-vi_VN pointing to /etc/X11/xinit/xinput.d/ibus-xim and another file at /etc/X11/xinit/xinput.d/vi_VN pointing to the first file, just like what they did with /etc/X11/xinit/xinput.d/ja_JP. After that, ibus-bogo will only show up by default in Vietnamese locale. Anything else then the users have to configure ibus themselves.

Having done that, we need to:

• set bogo as the default ibus engine through the use of GConf default override.

[lewtds]

Implementation: https://github.com/gokienos/gokien-iso/blob/529a952056d2ad4928e4b5c8a3d07b383991fa8d/patches/50-ibus-bogo