Added OpenSSH and Git optional packages for x86_64.

This commit is the first done from Haiku x86_64! Uncovered a few
networking bugs so hopefully this'll push OK... :)

build/jam/OptionalPackages

@@ -1134,9 +1134,7 @@ if [ IsOptionalHaikuImagePackageAdded GetText ] {
 
 # Git
 if [ IsOptionalHaikuImagePackageAdded Git ] {
-	if $(TARGET_ARCH) != x86 {
-		Echo "No optional package Git available for $(TARGET_ARCH)" ;
-	} else {
+	if $(TARGET_ARCH) = x86 {
 		if $(HAIKU_GCC_VERSION[1]) >= 4 {
 			InstallOptionalHaikuImagePackage
 				git-1.7.10.2-r1a4-x86-gcc4-2012-08-30.zip
@@ -1148,6 +1146,13 @@ if [ IsOptionalHaikuImagePackageAdded Git ] {
 				: $(baseURL)/git-1.7.10.2-r1a4-x86-gcc2-2012-08-28.zip
 				: : true ;
 		}
+	} else if $(TARGET_ARCH) = x86_64 {
+		InstallOptionalHaikuImagePackage
+			git-1.8.0-x86_64-2012-12-29.zip
+			: $(baseURL)/git-1.8.0-x86_64-2012-12-29.zip
+			: : true ;
+	} else {
+		Echo "No optional package Git available for $(TARGET_ARCH)" ;
 	}
 }
 
@@ -1695,15 +1700,17 @@ if [ IsOptionalHaikuImagePackageAdded OpenSound ] {
 
 # OpenSSH
 if [ IsOptionalHaikuImagePackageAdded OpenSSH ] {
-	if $(TARGET_ARCH) != x86 {
-		Echo "No optional package OpenSSH available for $(TARGET_ARCH)" ;
-	} else {
+	if $(TARGET_ARCH) = x86 || $(TARGET_ARCH) = x86_64 {
 		if ! $(HAIKU_IMAGE_HOST_NAME) && ! $(HAIKU_IGNORE_USER_BUILD_CONFIG) {
 			Exit "Optional package OpenSSH requires the HAIKU_IMAGE_HOST_NAME"
 				"variable to be set!" ;
 		}
 
-		if $(HAIKU_GCC_VERSION[1]) >= 4 {
+		if $(TARGET_ARCH) = x86_64 {
+			InstallOptionalHaikuImagePackage
+				openssh-6.0p1-x86_64-2012-12-29.zip
+				: $(baseURL)/openssh-6.0p1-x86_64-2012-12-29.zip ;
+		} else if $(HAIKU_GCC_VERSION[1]) >= 4 {
 			InstallOptionalHaikuImagePackage
 				openssh-6.0p1-r1a4-x86-gcc4-2012-09-29.zip
 				: $(baseURL)/openssh-6.0p1-r1a4-x86-gcc4-2012-09-29.zip ;
@@ -1715,6 +1722,8 @@ if [ IsOptionalHaikuImagePackageAdded OpenSSH ] {
 
 		AddUserToHaikuImage sshd : 1001 : 100 : /var/empty : /bin/true
 			: "sshd user" ;
+	} else {
+		Echo "No optional package OpenSSH available for $(TARGET_ARCH)" ;
 	}
 }