FreeBSD 11 supports robust process-shared POSIX mutexes,
but requires them to be explicitly destroyed before munmap

mdb_load wasn't properly inserting escaped backslashes into the data.
mdb_dump wasn't escaping backslashes when generating printable output.

Kris Zyp authored Apr 15, 2019 and Howard Chu committed Apr 16, 2019

Broken in ITS#8756

Kris Zyp authored Feb 06, 2019 and Howard Chu committed Feb 10, 2019

CreateFileMapping already takes care of it.

Bump up number of keys for which we use fine-grained splitpoint search

Unnecessary since these are DUPs, the key will always be the same

Avoid stomping on flags from 1st readhr invocation

Hallvard Furuseth authored Sep 11, 2017 and Quanah Gibson-Mount committed Feb 11, 2018

This checks XCURSOR_INITED() and fixes the mn_flags check.

Hallvard Furuseth authored Sep 10, 2017 and Quanah Gibson-Mount committed Feb 11, 2018

* Check NUMKEYS(), similar to f34b61f9
  "ITS#8722 fix FIRST_DUP/LAST_DUP cursor bounds check".
* Move XCURSOR_INITED() into XCURSOR_REFRESH().  This adds a check in
  mdb_cursor_put, below /* converted, write the original data first */.
* Factor mc_ki[] out to XCURSOR_REFRESH().
* Replace an mc_pg[] with mp which is equal (mdb_cursor_del0).