Consistent unlock styles with pam and blur patches

Adding background image patch

Proposed change to avoid high CPU usage ref. #7

Fix for secret password patch compilation error ref. #6

Adding dwmlogo patch ref. #5

Adding auto-timeout patch

Adding secret password patch

Adding failure-command patch

Adding color message patch ref. #3

Adding alpha patch

Adding blur pixelated screen patch

Adding keypress_feedback patch

Fix bug in DPMS patch + moved patches.h to patches.def.h to match that of config

Adding xresources patch

Added capscolor, control clear, dpms, mediakeys, message, pam auth, quickcancel patches

Properly clear the last entered character

When enter is pressed, passwd[len] will be set to '\0'. Pressing
backspace is supposed to remove the last entered character.

But currently, the clearing has an off-by-one, as in setting
passwd[len] to '\0' just like enter would do.

You can also verify it by imagining len=1 and that it's impossible to
clear passwd[0] by pressing backspace with the current code.

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>

syntax fix

there can only be one window in the event

Fix resize with multiple monitors and portrait mode

When connecting/disconnecting a portrait monitor, the
XRRScreenChangeNotifyEvent height & width are reversed due to the XRandR
rotation; detect this and DTRT.

move config.h inclusion after type declarations