pgsql conventions (tabs, four-spaces-wide, etc) applied all around.
Also tried to fix some very tiny capitalization errors, auto-fill
problems, and some inter-block vertical whitespacing issues.
Long strings in repmgr.c were left intact, though. They are rather
numerous and are less of a problem than tiny bits of function calls
and comments wrapping over a line; the latter kind of problem has been
mostly fixed.
Signed-off-by: Dan Farina <drfarina@acm.org>
Signed-off-by: Peter van Hardenberg <pvh@heroku.com>
the main difference is that this new function doesn't return a bool but
a string representing the current major version of the postgresql server
or an empty string if it's earlier than 9.0.
Teach all commands that could connect to master and standby that they
both should have the same major version.
