(ITS#7879) liblmdb "mtest" programs do not build on mingw64

[batterseapower@hotmail.com]

Full_Name: Max Bolingbroke
Version: LMDB HEAD
OS: Windows
URL: ftp://ftp.openldap.org/incoming/max-bolingbroke-20140622.patch
Submission from: (NULL) (81.111.197.81)


srandom/random do not appear to be defined on mingw. The trivial patch in
max-bolingbroke-20140622.patch simply defines these functions to the C standard
equivalents on Windows, which lets LMDB build cleanly there.

I, Maximilian Bolingbroke, hereby place the following modifications to liblmdb
(and only these modifications) into the public domain. Hence, these
modifications may be freely used and/or redistributed for any purpose with or
without attribution and/or other notice.