php: use the new gettext logic

This commit switches to use the new gettext logic, which involves:

 - using TARGET_NLS_DEPENDENCIES instead of hand-encoded dependencies
   on gettext/host-gettext

 - dropping BR2_PACKAGE_GETTEXT selection. Thanks to this, we can drop
   the BR2_USE_WCHAR dependency

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/php/Config.ext

@@ -164,13 +164,12 @@ comment "Human language and character encoding support"
 
 config BR2_PACKAGE_PHP_EXT_GETTEXT
 	bool "Gettext"
-	depends on BR2_USE_WCHAR
-	select BR2_PACKAGE_GETTEXT if BR2_NEEDS_GETTEXT
+	depends on BR2_SYSTEM_ENABLE_NLS
 	help
 	  Gettext support
 
-comment "Gettext support needs a toolchain w/ wchar"
-	depends on !BR2_USE_WCHAR
+comment "Gettext support needs NLS enabled"
+	depends on !BR2_SYSTEM_ENABLE_NLS
 
 config BR2_PACKAGE_PHP_EXT_ICONV
 	bool "iconv"

package/php/php.mk

@@ -160,7 +160,7 @@ endif
 
 ifeq ($(BR2_PACKAGE_PHP_EXT_GETTEXT),y)
 PHP_CONF_OPTS += --with-gettext=$(STAGING_DIR)/usr
-PHP_DEPENDENCIES += $(if $(BR2_NEEDS_GETTEXT),gettext)
+PHP_DEPENDENCIES += $(TARGET_NLS_DEPENDENCIES)
 endif
 
 ifeq ($(BR2_PACKAGE_PHP_EXT_ICONV),y)