Edit leftover automake files and READMEs for Serbian localization

This patch adds sr.po files to Makefile.am files throughout the repository
where needed. It also adds credits for Serbian localization in README files as
needed.

Signed-off-by: Страхиња Радић <contact@strahinja.org>

WINGs/po/Makefile.am

@@ -4,7 +4,7 @@ CATALOGS = @WINGSMOFILES@
 
 CLEANFILES = $(CATALOGS) $(DOMAIN).pot
 
-EXTRA_DIST = bg.po ca.po cs.po de.po fr.po fy.po hu.po nl.po sk.po
+EXTRA_DIST = bg.po ca.po cs.po de.po fr.po fy.po hu.po nl.po sk.po sr.po
 
 # WUtil files:
 POTFILES  = \

WINGs/po/README

@@ -9,6 +9,7 @@ sk.po	Slovak		 	Jan 'judas' Tomka <judas@linux.sk>
 bg.po	Bulgarian		Anton Zinoviev <zinoviev@debian.org>
 nl.po	Dutch			Alwin <translations@ziggo.nl>
 fy.po	Frisian			Alwin <translations@ziggo.nl>
+sr.po	Serbian			Strahinya Radich <contact@strahinja.org>
 
 Notes
 -----

WPrefs.app/po/README

@@ -26,3 +26,4 @@ et.po	Estonian		Ivar Smolin <okul@linux.ee>
 ca.po	Catalan			Ernest Adrogué <eadrogue@gmx.net>
 nl.po	Dutch			Alwin <translations@ziggo.nl>
 fy.po	Frisian			Alwin <translations@ziggo.nl>
+sr.po	Serbian			Strahinya Radich <contact@strahinja.org>

WindowMaker/README

@@ -64,6 +64,7 @@ menu.bg	Bulgarian	Slavei Karadjov <slaff@exco.net>
 menu.sk Slovak      	judas@hell <tomka@oalevice.sk>
 menu.nl Dutch		Alwin <translations@ziggo.nl>
 menu.fy Frisian		Alwin <translations@ziggo.nl>
+menu.sr	Serbian		Strahinya Radich <contact@strahinja.org>
 
 
 
@@ -80,4 +81,5 @@ plmenu.sk Slovak      	judas@hell <tomka@oalevice.sk>
 plmenu.ja Japanese	Seiichi SATO <sato@cvs-net.co.jp>
 plmenu.nl Dutch		Alwin <translations@ziggo.nl>
 plmenu.fy Frisian	Alwin <translations@ziggo.nl>
+plmenu.sr Serbian	Strahinya Radich <contact@strahinja.org>
 

po/Makefile.am

@@ -7,7 +7,8 @@ CLEANFILES = $(CATALOGS) $(DOMAIN).pot
 # Please keep this sorted in alphabetic order!
 EXTRA_DIST = be.po bg.po bs.po ca.po cs.po da.po de.po el.po es.po et.po \
 	fi.po fr.po fy.po gl.po hr.po hu.po hy.po it.po ja.po ko.po ms.po nl.po \
-	no.po pl.po pt.po ro.po ru.po sk.po sv.po tr.po uk.po zh_CN.po zh_TW.po
+	no.po pl.po pt.po ro.po ru.po sk.po sr.po sv.po tr.po uk.po zh_CN.po \
+	zh_TW.po
 
 POTFILES  = \
 	$(top_srcdir)/src/actions.c \

util/po/README

@@ -2,6 +2,7 @@ File	Language	Note	Current Maintainer
 ------------------------------------------------------------------------------
 nl.po	Dutch			Alwin <translations@ziggo.nl>
 fy.po	Frisian			Alwin <translations@ziggo.nl>
+sr.po	Serbian			Strahinya Radich <contact@strahinja.org>
 
 Notes
 -----

wrlib/po/Makefile.am

@@ -4,7 +4,7 @@ CATALOGS = @WRASTERMOFILES@
 
 CLEANFILES = $(CATALOGS) $(DOMAIN).pot
 
-EXTRA_DIST = fr.po
+EXTRA_DIST = fr.po sr.po
 
 POTFILES  = \
 	$(top_srcdir)/wrlib/raster.c	\