"failed to set up inotify handler. please increase inotify limits"

Opened PR with a fix for root users:

Quote: Purpose Fix the issue for root users by temporarily increasing “fs.inotify.max_user_watches” to 128K (instead of 8K).

Related issue: #1208 “Syncthing is running out of inotify watches” Forum discussion: "failed to set up inotify handler. please increase inotify limits" - #15 by Catfriend1

Testing Verified working running syncthing rooted on Android 7.1.2 on device lg-h815 at commit Root only - Temporarily increase fs.inotify.max_user_watches to 128K … · syncthing/syncthing-android@ef5729d · GitHub .

Tests a) Running non-rooted

b) Running rooted