pillowfight.cc: use C linkage for signal handlers
pillowfight.cc: use C linkage for signal handlers

Change-Id: I8447fdf23bbf11d30ca1e49c75a58775f93373b4
Reviewed-on: http://review.couchbase.org/25102
Tested-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>

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