keymap-dump: style cleanups

Signed-off-by: Ran Benita <ran234@gmail.com>
keymap-dump: don't indent after xkb_keymap {

xkbcomp doesn't indent there, so it's easier to diff.
Also saves some horizontal space which is sorely needed when looking at
these files (especially the xkb_symbols).

Signed-off-by: Ran Benita <ran234@gmail.com>
keymap-dump: remove some ugly empty lines

xkbcomp prints them too, but that's just annoying. Also xkb_keycodes
doesn't have it already.

Signed-off-by: Ran Benita <ran234@gmail.com>
keymap-dump: move writing 'key {}' in symbols to its own function

Signed-off-by: Ran Benita <ran234@gmail.com>
Makefile.am: don't create INSTALL and ChangeLog

It may be xorg standard but it's completely useless and clutter the
directory.

Signed-off-by: Ran Benita <ran234@gmail.com>