Low: pgsql: add restart_on_promote parameter

- Default is false.
- True means that RA deletes recovery.conf and restarts PostgreSQL
  on promote to keep Timeline ID.
Medium: IPaddr2: really send arps in background if requested
Medium: SAPDatabase: improvement of cleanup of saphostctrl process
Low: SAPInstance: monitor-master not advertised Bug #782482
Merge pull request #172 from t-matsuo/restart-pgsql-on-promote

Medium: pgsql: add restart_on_promote parameter
Dev: IPaddr2: use send_ua for infiniband interfaces configured as ipv6
Medium: IPaddr2: use send_arp instead of ipoibarping if not available

The future of ipoibarping, which was used for infiniband
interfaces, seems to be uncertain and some distributions don't
have it at all. After this commit, we fallback to our send_arp,
but also issue a warning message (only on start). The new
parameter arp_sender allows for more flexibility and may be set
to send_arp to avoid the message.
Dev: Filesystem: simplify sending signals to processes
Low: Raid1: log processes holding RAID device(s)
Low: iscsi: log every connection state change on recovery
Medium: SAPInstance: don't wait for timeout if the stop attempt failed
Low: SAPInstance: cleanup instance does not delete all pid files
Low: Filesystem: create mount point if necessary

Thanks to Walter Stanish (at github.com).
Medium: SAPInstance: failes on sapcontrol message Unauthorized - Bug #782486
Low: SAPInstance: variables not locally declared in shell functions
Merge pull request #174 from AlexanderKrauth/master

SAPInstance/SAPDatabase two bugs and some minor fixes
Low: ocf-shellfuncs: do not log twice when logfile=debuglog
build: update ChangeLog for release candidate 3.9.4 rc
Low: rgmanager: clusterfs: fix bogus options description

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Low: pgsql: delete an unnecessary variable