Update gitignore
Update gitignore again
Remove build files for ramdisk

Conflicts:
	kernel/usr/initramfs/default.prop
	kernel/usr/initramfs/file_contexts
	kernel/usr/initramfs/init
	kernel/usr/initramfs/init.cm.rc
	kernel/usr/initramfs/init.environ.rc
	kernel/usr/initramfs/init.qcom.rc
	kernel/usr/initramfs/init.rc
	kernel/usr/initramfs/init.superuser.rc
	kernel/usr/initramfs/init.target.rc
	kernel/usr/initramfs/init.trace.rc
	kernel/usr/initramfs/init.usb.rc
	kernel/usr/initramfs/property_contexts
	kernel/usr/initramfs/sbin/adbd
	kernel/usr/initramfs/sbin/busybox
	kernel/usr/initramfs/sbin/healthd
	kernel/usr/initramfs/seapp_contexts
	kernel/usr/initramfs/sepolicy
	kernel/usr/initramfs/ueventd.rc