core/settings: only sync values that are actually changed

Add a variable reflecting the current_state to all DISK_* macros, in order to
check if the original variable in struct preferences is changed.

Only save to disk if actually changed

[Dirk Hohndel: merged Jan's commit and renamed the variable and adjusted the
               commit message... but fundamentally the commit is still what Jan
               wrote, so he should get the credit]

Signed-off-by: Jan Iversen <jani@apache.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

0 files changed, 0 insertions, 0 deletions