fix cache dir bug

ApplyPatch:add string.h to fix linux compile error

Signed-off-by: erfanoabdi <erfangplus@gmail.com>

add ApplyPatch

use ApplyPatch to patch files using .p
same as apply_patch() on recovery

First Release

update gitignore and add blockimg

Signed-off-by: erfanoabdi <erfangplus@gmail.com>