audit, db: add etc/apk/protected_files.d and new audit features

fixes #607.

audit is now mostly rewritten for the new functionality. And
has new features like --check-permissions, --recursive and
--packages.

$ROOT/etc/apk/protected_files.d/*.list can now contain additional
protected paths, one path per line:

+etc
@etc/init.d
-tmp

+ will include the directory as protected configuration directory.
@ considers the directory protected, but will backup only symlinks.
- removes any protection

lbu should be modified to put include and exclude paths in
etc/apk/protected_files.d/lbu.list. Additionally, some packages
might provide their own listings.

E.g. ssh might want to provide ssh.list with something like:
+root/.ssh
+home/*/.ssh

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fix.c b/src/fix.c
index e3fea11..d63006a 100644
--- a/src/fix.c
+++ b/src/fix.c
@@ -50,7 +50,7 @@ static int fix_parse(void *pctx, struct apk_db_options *dbopts,
 static int mark_recalculate(apk_hash_item item, void *ctx)
 {
 	struct apk_db_dir *dir = (struct apk_db_dir *) item;
-	dir->flags |= APK_DBDIRF_RECALC_MODE;
+	dir->recalc_mode = 1;
 	return 0;
 }