WRAPPER_EXTRA_LDFLAGS is both no longer used, and even if we fixed to
use the new names (i.e., <PACKAGE>_WRAPPER_EXTRA_LDFLAGS), it contains
a token that will not be understandable in Makefile.ams: @{libdir}.
Hence, update all instances to use <PACKAGE>_PKG_CONFIG_LDFLAGS, which
does not contain the @{libdir} token. See comment in
opal_setup_wrappers.m4 for an explanation.
the OPAL and ORTE libraries. This is required by projects such as ORCM
that have their own ORTE and OPAL libraries in order to avoid library
confusion. By renaming their version of the libraries, the OMPI
applications can correctly dynamically load the correct one for their
build."
This reverts commit 63f619f871.
