Remove directory creation as a recipe

Using directory modification times is fraught with peril. Since all we
need is to ensure that the directory is there, call `mkdir -p` prior to
writing a file.

Makefile

@@ -132,17 +132,13 @@ help: #> Display this help message
 #
 #-----------------------------------------------------------------------------#
 
-# Isolating the directory making logic here so that we are not repeatedly
-# building directories and changing timestamps--let's have Make deal with this
-${WORKING} ${STAGING}: %:
-	@mkdir -p $@
-	@echo "\t✓ Created $@"
-
-${banner}: ${banner_template} ${WORKING}
+${banner}: ${banner_template}
+	@mkdir -p ${WORKING}
 	@m4 --include=${MAKO_DIR} $< > $@
 	@echo "\t✓ Generated site banner"
 
-${site_index}: ${site_index_template} ${STAGING} ${banner} ${curate_dirs} ${index_dirs}
+${site_index}: ${site_index_template} ${banner} ${curate_dirs} ${index_dirs}
+	@mkdir -p ${STAGING}
 	@m4 --include=${MAKO_DIR} --define=WORKING=${WORKING} $< > $@
 	@echo ${BUILD_DATE_MSG} >> $@
 	@echo "\t✓ Generated site index file"
@@ -158,7 +154,7 @@ ${index_dirs}: %:
 	@echo
 	@echo "Entering section: $@"
 	@echo
-	@#cd ${CONTENT}/$@ && ${MAKE} -f ${index_make} build
+	@cd ${CONTENT}/$@ && ${MAKE} -f ${index_make} build
 	@echo "✓ Completed $@ section"
 
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