add reload_doc in a few patches
minor fix no-copy
Merge pull request #2520 from nabinhait/fix1

minor fix no-copy
fixed negative batch wty message
Merge pull request #2521 from nabinhait/fix1

fixed negative batch wty message
Merge pull request #2509 from pdvyas/fix-patches

add reload_doc in a few patches
bumped to version 4.15.2
Merge branch 'develop'