Why does bee_install fail?
[BEE] action 'bee_install' is not defined: skipping.. looks like a failure, or ?

1. While you at it, it’d be great if you updated the bee file too, that means remove outdated commands/meta data (build_in_sourcedir, …).

2. Also, make -C ${S}/scintilla/gtk is shorter in my opinion.

3. If you could it build it with GTK+ 3, that’d be great.

mee_build() {
    make -C ${S}/scintilla/gtk GTK3=1
    make -C ${S}/scite/gtk GTK3=1
}

mee_install() {
    make install -C ${S}/scite/gtk prefix=${D}/${PREFIX}
    ln -s SciTE ${D}${BINDIR}/scite
}

Looks like you are itching to complete the task, go ahead :)

Well, I appreciate your comments as proposals. But actually I can live with GTK2 and the bee file in its current state.