keymap: add HP EliteBook 2570p's wlan switch to hwdb

https://bugs.freedesktop.org/show_bug.cgi?id=66178
hwdb: add GIGABYTE U2442 mute key to the force-release list

https://bugs.freedesktop.org/show_bug.cgi?id=67651
hwdb: update
hwdb: map logitech R400 presenter keys from powerpoint hotkeys to sensible KEY_ definitions
build-sys: add two makefile symlinks
hwdb: keyboard - remove stray "

<dvdhrm> kay, hwdb/60-keyboard.hwdb line 147 it says KEYBOARD_KEY_ee=screenlock"
         with a " at the end. I guess that's a typo?
keymap: add Pavilion dv7 keys
keyboard: add eMachines E725

Information supplied by Ludvig <enthymeme@lavabit.com>.
Keyboard map for Samsung NP700Z3C

I'm using Ubuntu 13.04 on a Samsung Series 5 computer and found that that
Fn hotkeys does not work.
keymap: Add Samsung NP53U3C

https://launchpad.net/bugs/1203853
keymap: Add Logitech Internet Navigator variant [PID C309]

By Albrecht Kolthoff <kolthoff@gmx.net> via linux-hotplug@.
keymap: Don't erase previous assignments

Don't use "KEYBOARD_KEY_xx=!" assignments (i. e. only enabling force-release)
if more general matches already explicitly set a key code before, to not
override the previously set value.

https://launchpad.net/bugs/1218433
keymap: Fix Dell vendor names

Spaces are dropped from vendor and product names in DMI modaliases, so a match
like "svnDell Inc.:" will never happen. Also, some machines use "Dell", some
"Dell Inc", some "Dell Inc.", so just match on "Dell*" to avoid all these
traps.

https://launchpad.net/bugs/1218433
keymap: Don't use spaces in DMI modalias matches

Spaces get dropped from DMI modaliases. Replace them with '*' to make them
robust against future changes in space escaping.
keymap: Fix typo in Latitude/Precision rules

We actually want to match the product name, "pn:" makes no sense.
keymap: Explicitly match "any product name" for "all models from vendor" rules

Without this, the hwdb trie gets mis-sorted to match the more specific rules
first, as ":pvr" is lexicographically after ":pn". So ensure that all our
matches have some ":pn" match to avoid this trap.
keymap: Add Asus WMI module

We need to override the TOUCHPAD_TOGGLE to F21 to make it useful under X, as
for other models.
hwdb/Makefile: remove sym link instroduced by upstram