Add explicit Thread_info::Thread_info() and move both
  initializers out of class definition, to solve link
  problem on QNX
Makefile.am:
  Preserve executable mode on scripts
make_binary_distribution.sh:
  Copy *.imtest files


scripts/make_binary_distribution.sh:
  Copy *.imtest files
mysql-test/Makefile.am:
  Preserve executable mode on scripts
server-tools/instance-manager/thread_registry.cc:
  Add explicit Thread_info::Thread_info() and move both
  initializers out of class definition, to solve link
  problem on QNX
server-tools/instance-manager/thread_registry.h:
  Add explicit Thread_info::Thread_info() and move both
  initializers out of class definition, to solve link
  problem on QNX