pmlogrewrite - fix alignment problems
pmlogrewrite - fix alignment problems

Found on IA64 testing.  pval->vbuf is _not_ nicely aligned for data
of type long, double or float data types ... replace some in-line
assignments by memcpy() calls to address this, and use some temporary
pmAtomValue variables to accumulate values.

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