gnucash-on-windows master: Update MINGW_PTHREAD_W32_VERSION to 2.10-pre-20160821.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-on-windows/commit/d9f248da (commit)
	from  https://github.com/Gnucash/gnucash-on-windows/commit/da91860f (commit)



commit d9f248daa62ce042c32e8f807a1bfe2de9603061
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Dec 27 13:25:24 2016 -0800

    Update MINGW_PTHREAD_W32_VERSION to 2.10-pre-20160821.
    
    Earlier versions of mingw32-libpthread-dll have been removed from the repository, breaking installation.



Summary of changes:
 defaults.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)