mail/emailrelay: cosmetic fixes

This is just a cosmetic thing, therefore no increase of PKG_RELEASE.
- Trailing spaces and tabs
- Add newline to end of file
- Add License info to Makefile
- Move maintainer definition to PKG_MAINTAINER

Signed-off-by: Paul Wassi <p.wassi@gmx.at>

mail/emailrelay/Makefile

@@ -14,11 +14,14 @@ PKG_RELEASE:=4
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-src.tar.gz
 PKG_SOURCE_URL:=@SF/emailrelay/$(PKG_VERSION)
 PKG_HASH:=869a3e2d053237d7f63784acc25e748af2dbf2d9b9c5c48e4a5269d4e4b5bda0
+PKG_MAINTAINER:=Federico Di Marco <fededim@gmail.com>
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
 
 PKG_CONFIG_DEPENDS:=CONFIG_EMAILRELAY_SUPPORT_VERBOSE_DBG CONFIG_EMAILRELAY_SSL
 
+PKG_LICENSE:=GPL-3.0
+PKG_LICENSE_FILES:=COPYING
 
 #include $(INCLUDE_DIR)/uclibc++.mk   # $(CXX_DEPENDS)
 include $(INCLUDE_DIR)/package.mk
@@ -29,7 +32,6 @@ define Package/emailrelay
   DEPENDS:=+EMAILRELAY_SSL:libopenssl +libstdcpp
   TITLE:=A simple SMTP proxy and MTA
   URL:=http://emailrelay.sourceforge.net/
-  MAINTAINER:=Federico Di Marco <fededim@gmail.com>
   MENU:=1
 endef
 
@@ -57,11 +59,11 @@ define Package/emailrelay/description
  Emailrelay is a simple SMTP proxy and store-and-forward message transfer agent (MTA).
 
  When running as a proxy all e-mail messages can be passed through
-  a user-defined program, such as a spam filter, which can drop, 
-  re-address or edit messages as they pass through. When running 
-  as a store-and-forward MTA incoming messages are stored in a 
-  local spool directory, and then forwarded to the next SMTP 
-  server on request.
+ a user-defined program, such as a spam filter, which can drop,
+ re-address or edit messages as they pass through. When running
+ as a store-and-forward MTA incoming messages are stored in a
+ local spool directory, and then forwarded to the next SMTP
+ server on request.
 endef