Using flag diacritics for faster compilation

`lexd` is a bit slow to compile dictionaries that make heavy use of filters.

To speed this up, you can enable compiling to flag diacritics.

Implementing the change

First thing you want to do is edit your `Makefile.am`:

• remove `autogen.bin` and `automorf.bin` lines from the TARGETS_COMMON list at the top
• add `-f` as a switch to the `lexd` commmands
• add `-F` as a switch to the `hfst-compose` command in the the `automorf.hfst` line

This will all look something like this:

 TARGETS_COMMON =                       \
        $(LANG1).automorf.hfst          \
-       $(LANG1).automorf.bin           \
        $(LANG1).automorf.att.gz        \
        $(LANG1).autogen.hfst           \
-       $(LANG1).autogen.bin            \
        $(LANG1).autogen.att.gz         \
        $(LANG1).autopgen.bin           \
        $(LANG1).rlx.bin            \
        $(LANG1).zhfst

 .deps/$(LANG1).RL.lexd.hfst: .deps/$(LANG1).RL.lexd
-       lexd $< .deps/$(LANG1).RL.lexd.att
+       lexd -f $< .deps/$(LANG1).RL.lexd.att
        hfst-txt2fst .deps/$(LANG1).RL.lexd.att -o $@
 
 .deps/$(LANG1).LR.lexd.hfst: .deps/$(LANG1).LR.lexd
-       lexd $< .deps/$(LANG1).LR.lexd.att
+       lexd -f $< .deps/$(LANG1).LR.lexd.att
        hfst-txt2fst .deps/$(LANG1).LR.lexd.att -o $@

 $(LANG1).automorf.hfst: .deps/$(LANG1).LR.hfst .deps/$(LANG1).spellrelax.hfst
-       hfst-compose -1 $< -2 .deps/$(LANG1).spellrelax.hfst | hfst-invert | hfst-fst2fst -O -o $@
+       hfst-compose -F -1 $< -2 .deps/$(LANG1).spellrelax.hfst | hfst-invert | hfst-fst2fst -O -o $@