Simplify parameters handling for observe
Simplify parameters handling for observe

* this static function is used only once
* almost all parameters used to output something
* it has generic name which says nothing about what the function does

Change-Id: I98836d70ecb047946fcf43efd782c127573caae1
Reviewed-on: http://review.couchbase.org/28071
Tested-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Reviewed-by: Mark Nunberg <e7d42768707bf23038325b0b68d4b577e5f6064a@haskalah.org>

trondn/libcouchbase,maxim-ky/libcouchbase,avsej/libcouchbase,trondn/libcouchbase,avsej/libcouchbase,uvenum/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,uvenum/libcouchbase,senthilkumaranb/libcouchbase,couchbase/libcouchbase,mnunberg/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,kojiromike/libcouchbase,signmotion/libcouchbase,mody/libcouchbase,PureSwift/libcouchbase,mody/libcouchbase,kojiromike/libcouchbase,couchbase/libcouchbase,senthilkumaranb/libcouchbase,mnunberg/libcouchbase,signmotion/libcouchbase,PureSwift/libcouchbase,kojiromike/libcouchbase,senthilkumaranb/libcouchbase,mnunberg/libcouchbase,signmotion/libcouchbase,couchbase/libcouchbase,signmotion/libcouchbase,uvenum/libcouchbase,avsej/libcouchbase,trondn/libcouchbase,couchbase/libcouchbase,mody/libcouchbase,avsej/libcouchbase,trondn/libcouchbase,PureSwift/libcouchbase,senthilkumaranb/libcouchbase,uvenum/libcouchbase,mnunberg/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,trondn/libcouchbase,mnunberg/libcouchbase,avsej/libcouchbase,PureSwift/libcouchbase,uvenum/libcouchbase,maxim-ky/libcouchbase,maxim-ky/libcouchbase,kojiromike/libcouchbase,maxim-ky/libcouchbase