Merge branch 'fix_esmf_link_path' into develop (PR #1432)

This merge corrects a typographical error in src/core_atmosphere/utils/Makefile,
where the variable 'MPAS_ESMF_LIBS' should be 'MPAS_ESMF_LIB', matching the
name of the variable as defined in the top-level Makefile.

This typo was caught when trying to build with the 'nvhpc' target with
DEBUG=true, where missing references to various esmf symbols were generated when
linking the 'build_tables' executable.

* fix_esmf_link_path:
  Correcting the ESMF link path in src/core_atmosphere/utils/Makefile

Author: mgduda

src/core_atmosphere/utils/Makefile

@@ -7,7 +7,7 @@ endif
 all: $(UTILS)
 
 build_tables: build_tables.o atmphys_build_tables_thompson.o
-	$(LINKER) $(LDFLAGS) -o build_tables build_tables.o atmphys_build_tables_thompson.o -L../../framework -L../physics -lphys -lframework $(LIBS) $(MPAS_ESMF_LIBS)
+	$(LINKER) $(LDFLAGS) -o build_tables build_tables.o atmphys_build_tables_thompson.o -L../../framework -L../physics -lphys -lframework $(LIBS) $(MPAS_ESMF_LIB)
 	mv build_tables ../../..