event: fix resetting class handlers object

If you don't explicitly specify to use a global variable when doing an
assignment, you will be setting a local variable instead, which means
this function wasn't working at all. It explains some odd behaviour we
have seen in the layer index where event handlers were sometimes
bleeding into other contexts where they should not have been.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
data: Handle BASH_FUNC shellshock implication

The shellshock patches changed the way bash functions are exported.
Unfortunately different distros used slightly different formats,
Fedora went with BASH_FUNC_XXX()=() { echo foo; } and Ubuntu went with
BASH_FUNC_foo%%=() {  echo foo; }.

The former causes errors in dealing with out output from emit_env,
the functions are not exported in either case any more.

This patch handles things so the functions work as expected in either
case.

[YOCTO #6880]

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
runqueue: Fix 100% cpu use after keyboard interrupt

After Ctrl+C is pressed to interrupt bitbake, it loops continually, running
at 100% cpu. This patch selects on the correct file descriptors resolving
the excess cpu usage.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>