s/adiacent/adjacent/

fixed typo in a comment (step 2 memcheck)
fixed some typos.
Typo in sentinel.conf

Fixes a minor typo in sentinel.conf
Not every __sun has backtrace().

I don't know how to test for Open Solaris that has support for
backtrace() so for now removing the #ifdef that breaks compilation under
other Solaris flavors.
Merge pull request #884 from kaerast/patch-1

Typo in sentinel.conf
Merge pull request #883 from deepsolo9/fix-typos-deepsolo9

fixed some typos in Redis.c
Merge pull request #869 from bilalhusain/patch-2

s/adiacent/adjacent/
Fixed a bug in memtest progress bar, that had no actual effects.

This closes issue #859, thanks to @erbenmo.