Consistent unlock styles with pam and blur patches

config.mk: adding reference to -D_NETBSD_SOURCE and -D_BSD_SOURCE

Adding background image patch

Proposed change to avoid high CPU usage ref. #7

Fix for secret password patch compilation error ref. #6

Comment out dependencies by default

dwmlogo: avoid defining BACKGROUND colour if BLUR_PIXELATED_SCREEN_PATCH is enabled ref. #5

Adding dwmlogo patch ref. #5

Adding auto-timeout patch

Adding secret password patch

Adding failure-command patch

message patch: add xresources compatibility ref. #3

Adding color message patch ref. #3

Adding link to alpha patch

Adding alpha patch

Adding blur pixelated screen patch

Adding keypress_feedback patch

Adding slock to .gitignore

Specifying latest version

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