Fix qa/749 when systemtap userspace probes are unavailable
Fix qa/749 when systemtap userspace probes are unavailable

Tweak test 749 using Franks suggestion of verifying up to and
including the compilation phase (-p4) before going ahead with
the complete test.  This is to catch missing userspace probe
support on some platforms (s390x tripped this in the Red Hat
QE environment).

prasincs/pcp,aeg-aeg/pcpfans,tjanez/pcp,mbaldessari/pcp,edwardt/pcp,wuliming/pcp,prasincs/pcp,mbaldessari/pcp,adfernandes/pcp,prasincs/pcp,aeg-aeg/pcpfans,mbaldessari/pcp,adfernandes/pcp,tjanez/pcp,aeg-aeg/pcpfans,andyvand/cygpcpfans,aeg-aeg/pcpfans,prasincs/pcp,wuliming/pcp,wuliming/pcp,adfernandes/pcp,adfernandes/pcp,prasincs/pcp,adfernandes/pcp,edwardt/pcp,aeg-aeg/pcpfans,tjanez/pcp,andyvand/cygpcpfans,edwardt/pcp,aeg-aeg/pcpfans,wuliming/pcp,aeg-aeg/pcpfans,edwardt/pcp,tjanez/pcp,edwardt/pcp,prasincs/pcp,edwardt/pcp,andyvand/cygpcpfans,mbaldessari/pcp,tjanez/pcp,mbaldessari/pcp,edwardt/pcp,tjanez/pcp,andyvand/cygpcpfans,prasincs/pcp,adfernandes/pcp,andyvand/cygpcpfans,wuliming/pcp,aeg-aeg/pcpfans,adfernandes/pcp,tjanez/pcp,prasincs/pcp,wuliming/pcp,edwardt/pcp,wuliming/pcp,wuliming/pcp,mbaldessari/pcp,andyvand/cygpcpfans,tjanez/pcp,andyvand/cygpcpfans,adfernandes/pcp,andyvand/cygpcpfans