This update for qemu fixes the following issues:

- Fix a condition when retry logic does not execute in case of data
transmit failure or connection hungup (bsc#1108474)
- Use /bin/bash to echo value into sys fs for ksm control (bsc#1112646)
- fix memory leak in xen_disk (bsc#1100408)

- building against xen-devel requires the XC_* compat macros to be
set because this version of QEMU will be built against many
versions of Xen. configure will decide on the appropriate function
names it knows about today. To actually call these functions,
future versions of Xen may require XC_* to be set.
Furthermore, fix a bug in QEMU: xen_common.h undefines the XC_*
macros unconditionally. (bsc#1100408)

- Fix a condition when retry logic does not execute in case of data
transmit failure or connection hungup (bsc#1108474)

This update was imported from the SUSE:SLE-12-SP3:Update update project.