Added small Makefiles to doc dirs to make building docs more convenient.

muttator/locale/en-US/Makefile

@@ -0,0 +1,9 @@
+THISLOCALE=$(notdir $(shell pwd))
+
+all: *.html
+
+%: %.html %.txt
+	@make $@.html
+
+%.html: %.txt asciidoc.conf
+	@make -C ../../ locale/$(THISLOCALE)/$@

vimperator/locale/en-US/Makefile

@@ -0,0 +1,9 @@
+THISLOCALE=$(notdir $(shell pwd))
+
+all: *.html
+
+%: %.html %.txt
+	@make $@.html
+
+%.html: %.txt asciidoc.conf
+	@make -C ../../ locale/$(THISLOCALE)/$@