restore errludstring parse functionality for merged strings
restore errludstring parse functionality for merged strings

Change-Id: I26db60b81da8183cfbb253fe4d08bc62a2c8aee6
RTC: 88825
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/6947
Tested-by: Jenkins Server
Reviewed-by: Donald E. Dahle <c6b5664aa09a1f2c5e187c0cfbab936d45684096@us.ibm.com>
Reviewed-by: MIKE J. JONES <3bfb5759ff83ad3ac713f701b283073623a8cdd2@us.ibm.com>
Reviewed-by: A. Patrick Williams III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>

open-power/hostboot,alvintpwang/hostboot,open-power/hostboot,Over-enthusiastic/hostboot,alvintpwang/hostboot,csmart/hostboot,Over-enthusiastic/hostboot,alvintpwang/hostboot,open-power/hostboot,csmart/hostboot,open-power/hostboot,csmart/hostboot,csmart/hostboot,Over-enthusiastic/hostboot,alvintpwang/hostboot,Over-enthusiastic/hostboot,csmart/hostboot,open-power/hostboot,alvintpwang/hostboot,Over-enthusiastic/hostboot