[loc] use a single rufus.loc as translator base

* Remove the need to maintain a new_translation.loc
* Add a sed invocation to remove comments and unwanted stuff
  to generate a final embedded.loc
* Note: sed is only invoked for MinGW.
  MS compilers still embed the unmodified rufus.loc.
* Also fix a small bug when parsing the version.

res/localization/Makefile.am

@@ -0,0 +1,15 @@
+all-local: embedded.loc
+
+BUILT_SOURCES = embedded.loc
+noinst_PROGRAMS =
+noinst_EXES =
+
+pkg_v_sed = $(pkg_v_sed_$(V))
+pkg_v_sed_ = $(pkg_v_sed_$(AM_DEFAULT_VERBOSITY))
+pkg_v_sed_0 = @echo "  SED    $<";
+
+embedded.loc: rufus.loc
+	$(pkg_v_sed)$(SED) -f embedded.sed $< > $@
+
+clean-local:
+	-rm -rf embedded.loc