Move the Configure generated header files to the top build.info

This turns these headers into build file generated ones.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Configure

@@ -463,17 +463,6 @@ while ((my $first, my $second) = (shift @list, shift @list)) {
 # To remove something from %disabled, use "enable-foo".
 # For symmetry, "disable-foo" is a synonym for "no-foo".
 
-my @generated_headers = (
-    "include/openssl/opensslconf.h",
-    "crypto/include/internal/bn_conf.h",
-    "crypto/include/internal/dso_conf.h"
-    );
-
-my @generated_by_make_headers = (
-    "crypto/buildinf.h"
-    );
-
-
 my $no_sse2=0;
 
 &usage if ($#ARGV < 0);
@@ -1936,12 +1925,6 @@ print "THIRTY_TWO_BIT mode\n" if $config{b32};
 print "BN_LLONG mode\n" if $config{bn_ll};
 print "RC4 uses $config{rc4_int}\n" if $config{rc4_int} ne $def_int;
 
-for (@generated_headers) {
-    mkpath(catdir($blddir, dirname($_)));
-    run_dofile(catfile($blddir, $_),
-               catfile($srcdir, $_.".in"));
-}
-
 my %builders = (
     unified => sub {
         run_dofile(catfile($blddir, $target{build_file}),

build.info

@@ -6,6 +6,18 @@ INCLUDE[libcrypto]="{- rel2abs(catdir($builddir,"include")) -}" . crypto/include
 INCLUDE[libssl]="{- rel2abs(catdir($builddir,"include")) -}" . include
 DEPEND[libssl]=libcrypto
 
+# Empty DEPEND "indices" means the dependencies are expected to be built
+# unconditionally before anything else.
+DEPEND[]=include/openssl/opensslconf.h crypto/include/internal/bn_conf.h \
+         crypto/include/internal/dso_conf.h
+DEPEND[include/openssl/opensslconf.h]=configdata.pm
+GENERATE[include/openssl/opensslconf.h]=include/openssl/opensslconf.h.in
+DEPEND[crypto/include/internal/bn_conf.h]=configdata.pm
+GENERATE[crypto/include/internal/bn_conf.h]=crypto/include/internal/bn_conf.h.in
+DEPEND[crypto/include/internal/dso_conf.h]=configdata.pm
+GENERATE[crypto/include/internal/dso_conf.h]=crypto/include/internal/dso_conf.h.in
+
+
 IF[{- $config{target} =~ /^Cygwin/ -}]
  SHARED_NAME[libcrypto]=cygcrypto-{- $config{shlib_major}.".".$config{shlib_minor} -}
  SHARED_NAME[libssl]=cygssl-{- $config{shlib_major}.".".$config{shlib_minor} -}