Enable memory debugging while testing

Pre 1.1.0, 'make test' would set the environment variable
OPENSSL_DEBUG_MEMORY to "on".  This got lost when translating the old
build files to the new templates.  This changes reintroduces that
variable.
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1840)

Configurations/descrip.mms.tmpl

@@ -267,8 +267,10 @@ test tests : build_generated, build_programs_nodep, build_engines_nodep, -
         DEFINE SRCTOP {- sourcedir() -}
         DEFINE BLDTOP {- builddir() -}
         DEFINE OPENSSL_ENGINES {- builddir("engines") -}
+        DEFINE OPENSSL_DEBUG_MEMORY "on"
         IF "$(VERBOSE)" .NES. "" THEN DEFINE VERBOSE "$(VERBOSE)"
         $(PERL) {- sourcefile("test", "run_tests.pl") -} $(TESTS)
+        DEASSIGN OPENSSL_DEBUG_MEMORY
         DEASSIGN OPENSSL_ENGINES
         DEASSIGN BLDTOP
         DEASSIGN SRCTOP

Configurations/unix-Makefile.tmpl

@@ -251,6 +251,7 @@ test: tests
 	  PERL="$(PERL)" \
 	  EXE_EXT={- $exeext -} \
 	  OPENSSL_ENGINES=../$(BLDDIR)/engines \
+	  OPENSSL_DEBUG_MEMORY=on \
 	    $(PERL) ../$(SRCDIR)/test/run_tests.pl $(TESTS) )
 	@ : {- if ($disabled{tests}) { output_on(); } else { output_off(); } "" -}
 	@echo "Tests are not supported with your chosen Configure options"

Configurations/windows-makefile.tmpl

@@ -198,6 +198,7 @@ tests: build_generated build_programs_nodep build_engines_nodep depend
 	set SRCTOP=$(SRCDIR)
 	set BLDTOP=$(BLDDIR)
 	set PERL=$(PERL)
+	set OPENSSL_DEBUG_MEMORY=on
 	"$(PERL)" "$(SRCDIR)\test\run_tests.pl" $(TESTS)
 	@rem {- if ($disabled{tests}) { output_on(); } else { output_off(); } "" -}
 	@echo "Tests are not supported with your chosen Configure options"