AM: liberd sources from ACES-3.06 GPL
AM: adapt liberd for use in PG
AM: FIX size decl, otherwise fails on bounds checking
AM: erd.f90 is a wrapper around liberd
AM: Makefile to build liberd.a
AM: erd.f90 is not in liberd.a, append to main Makefile
AM: rename scratch arrays to iwork and dwork
AM: declare iwork and dwork scratch arrays thread-private
AM: dont import compiler settings, set them in Makefile
AM: make copy() a module sub to appear in timings
AM: by default compile without -fopenmp
AM: rm erd.o.dep erd.o erd.mod on make clean