xorg-server: Do not send spurious focus events

Apply an upstream patch to avoid sending focus evens when grab actually does
not change. This fixes certain full screen applications. [1]

Ensure that we actually don't try to find and link against HAL even if it's
around on the system we're compiling on [2]

Add CPE information [3]

PR: 245854 [1] (with changes), 245604 [2], 197712 [3]
Submitted by: naddy@ [1], mi@ [2], arrowd [3]
Reported by: shun [3]
MFH: 2020Q2