[lazarus] fixed some sigsegv's

[Peter Vreman]

I've fixed some crashes in lazarus.

1. The handleneeded/createhandle had a infiniteloop because parent=self

2. gtkfocusCB had the wrong declaration causing wrong data parameter. This
was the crash after a keypress

3. All gtk callback returned boolean instead of gboolean !
(gboolean=longbool). Don't forget that your 'working' with C libraries
which have a boolean of 4 bytes.


There is now a crash after enter is pressed on a tab, but that is up to
you to debug.


Peter