Move everything related to synopsis into subfolder

Clean up some unused and generated files

doc/Makefile

@@ -1,66 +1,18 @@
-.PHONY: all index status synopsis abstract
+.PHONY: all status synopsis abstract
+
+GFDOC=gfdoc
+S=../src
 
 all: synopsis
 
-GF_alltenses=$(GF_LIB_PATH)/alltenses
-GF=gf
-GFDOC=gfdoc
+status: status.html
 
-index:
-	txt2tags -thtml index.txt
-status:
+synopsis:
+	make -C synopsis
+
+status.html:
 	txt2tags -thtml status.txt
 
-synopsis: synopsis.html
-
-S=../src
-
-# List of languages extracted from languages.csv, with 'Synopsis' column == y
-LANGS=$(shell cat ../languages.csv | cut -d',' -f1,10 | grep ',y' | cut -d',' -f1)
-
-# This list was constructed by observing what files MkSynopsis.hs reads
-SRC_FILES=$(S)/abstract/Common.gf $(S)/abstract/Cat.gf $(S)/api/Constructors.gf $(S)/abstract/Structural.gf $(patsubst %,$S/*/Paradigms%.gf,$(LANGS))
-
-EXAMPLES_OUT=$(patsubst %,api-examples-%.txt,$(LANGS))
-INCLUDES=synopsis-intro.txt categories-intro.txt categories-imagemap.html synopsis-additional.txt synopsis-browse.txt synopsis-example.txt
-
-synopsis.txt: MkSynopsis.hs MkExxTable.hs $(INCLUDES) $(EXAMPLES_OUT) $(SRC_FILES)
-	runghc -i.. MkSynopsis.hs
-
-TMP=tmp.html
-synopsis.html: synopsis.txt _template.html
-	txt2tags --target=html --no-headers --quiet --toc --outfile=$@ --infile=$<
-	pandoc \
-		--from=html \
-		--to=html5 \
-		--standalone \
-		--template=_template.html \
-		--css=synopsis.css \
-		--metadata='title:"GF Resource Grammar Library: Synopsis"' \
-		--variable='rel-root:../..' \
-		--output=$(TMP) \
-		$@
-	mv $(TMP) $@
-
-categories.png: categories.dot
-	dot -Tpng $^ > $@
-
-categories-imagemap.html: categories.dot
-	dot -Tcmapx $^ > $@
-
 abstract:
 	$(GFDOC) -txthtml $S/abstract/*.gf
 	mv $S/abstract/*.html abstract
-
-api-examples.gfs: api-examples.txt MkExx.hs
-	runghc MkExx.hs < $< > $@
-
-# Since .gfo files aren't self-contained, the dependencies given here are
-# incomplete. But I am thinking that the Try%.gfo file will always be newer
-# than any other files it depends on, so the rule will trigger when
-# needed anyway. //TH 2018-10-22
-api-examples-%.txt: $(GF_alltenses)/Try%.gfo api-examples.gfs
-	GF_LIB_PATH=$(GF_LIB_PATH) $(GF) -retain -s $< <api-examples.gfs >$@
-
-clean:
-	rm -rf synopsis.txt api-examples.gfs $(EXAMPLES_OUT)