Added a CLEANUP mechanism to the exception handling library. Fixed a bug in the way setjmp() return codes were being handled that lead to infinite loops in some cases, exceptions getting missed in others. Made FINALLY {} a required element (unfortunately).

Makefile

@@ -2,18 +2,19 @@ CC=gcc
 LD=gcc
 EXECOBJ=
 LIBOBJECTS=src/exclib.o
-DEMOS=demo/single.exe demo/twolevel.exe demo/trypair.exe demo/catchgroup.exe demo/finally.exe demo/default.exe demo/helpers.exe demo/deepuncaught.exe
+DEMOS=demo/single.exe demo/twolevel.exe demo/trypair.exe demo/catchgroup.exe demo/finally.exe demo/default.exe demo/helpers.exe demo/deepuncaught.exe demo/cleanup.exe demo/skeleton.exe
 LIBTARGET=lib/libexc.a
 LIBS=
-CFLAGS=
+#CFLAGS=-Wall -Wextra -std=c89 -Wmissing-prototypes -Wstrict-prototypes -Wold-style-definition
+CFLAGS=-std=c89
 
 all: lib demo
 
 demo/%.exe: demo/%.o lib
-	$(LD) -o $@ $(CFLAGS) -L./lib $< -lexc -ggdb -gstabs
+	$(LD) -o $@ $(CFLAGS) -L./lib $< -lexc -ggdb
 
 %.o: %.c
-	$(CC) -c -o $@ $(CFLAGS) -ggdb -gstabs -I./include $<
+	$(CC) -c -o $@ $(CFLAGS) -ggdb -I./include $<
 
 .PHONY: demo
 demo: $(DEMOS)