Configuration: synchronise the variables on the build file templates

For some reason, we didn't use some of the possible target attributes
in the Unix Makefile template, and there was a similar but much
smaller lack of use in the Windows makefile template as well.
Reviewed-by: NMatt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10753)

Configurations/00-base-templates.conf

@@ -10,7 +10,7 @@ my %targets=(
 	includes	=> [],
 	lib_cflags	=> "",
 	lib_cppflags	=> "",
-	lib_defines	=> [],
+	lib_defines	=> [ 'OPENSSL_BUILDING_OPENSSL' ],
 	thread_scheme	=> "(unknown)", # Assume we don't know
 	thread_defines	=> [],
 

Configurations/unix-Makefile.tmpl

@@ -332,8 +332,15 @@ LIB_CPPFLAGS={- our $lib_cppflags =
                 join(' ', $target{lib_cppflags} || (),
                           $target{shared_cppflag} || (),
                           (map { '-D'.$_ }
+                               @{$target{lib_defines} || ()},
+                               @{$target{shared_defines} || ()},
                                @{$config{lib_defines} || ()},
                                @{$config{shared_defines} || ()}),
+                          (map { '-I'.quotify1($_) }
+                               @{$target{lib_includes}},
+                               @{$target{shared_includes}},
+                               @{$config{lib_includes}},
+                               @{$config{shared_includes}}),
                           @{$config{lib_cppflags}},
                           @{$config{shared_cppflag}});
                 join(' ', $lib_cppflags,
@@ -359,8 +366,15 @@ LIB_EX_LIBS=$(CNF_EX_LIBS) $(EX_LIBS)
 DSO_CPPFLAGS={- join(' ', $target{dso_cppflags} || (),
                           $target{module_cppflags} || (),
                           (map { '-D'.$_ }
+                               @{$target{dso_defines}},
+                               @{$target{module_defines}},
                                @{$config{dso_defines} || ()},
                                @{$config{module_defines} || ()}),
+                          (map { '-I'.quotify1($_) }
+                               @{$target{dso_includes}},
+                               @{$target{module_includes}},
+                               @{$config{dso_includes}},
+                               @{$config{module_includes}}),
                           @{$config{dso_cppflags}},
                           @{$config{module_cppflags}},
                           '$(CNF_CPPFLAGS)', '$(CPPFLAGS)') -}

Configurations/windows-makefile.tmpl

@@ -334,6 +334,7 @@ BIN_ASFLAGS={- join(' ', $target{bin_asflags} || (),
                          @{$config{bin_asflags}},
                          '$(CNF_ASFLAGS)', '$(ASFLAGS)') -}
 BIN_CPPFLAGS={- join(' ', $target{bin_cppflags} || (),
+                          (map { '-D'.$_ } @{$config{bin_defines} || ()}),
                           @{$config{bin_cppflags}},
                           '$(CNF_CPPFLAGS)', '$(CPPFLAGS)') -}
 BIN_CFLAGS={- join(' ', $target{bin_cflags} || (),