tidy unused default setting
sync with blade: reorganize and cleanup makefiles

*move ramdisk
*simplify copying prebuilt
*reorganize makefiles
*remove unneeded makefiles

from konstat commit 8f7b61d6e095eec6a2a930f8b22f3f98146a0225
update blade common patches
system.prop cleanups and setting max hidden apps to 10

these don't appear to do/help anything:
  wifi.supplicant_scan_interval=15
  ro.media.dec.jpeg.memcap=20000000
and this isn't enabled in the software so tidy it away:
  ro.hwaccel.lockscreen=0
wpa_supplicant: reduce scan timeout to workaround ar6000 problem

ar6k hangs on the first scan after resume causing slow wifi reconnects
as wpa_supplicant must timeout (30s) and then retry. work around the
binary module bug by setting the wpa_supplicant scan timeout to be much
shorter. hopefully 5s is still long enough. scans typically take 2-3s
on my network.