Enhancement - Filters

- Filter implemented.
- Unit tests started, need more as Att::match matures.

src/tests/Makefile

@@ -1,5 +1,5 @@
 PROJECT = t.t t2.t tdb.t date.t duration.t t.benchmark.t text.t autocomplete.t \
-          parse.t seq.t att.t stringtable.t record.t nibbler.t subst.t
+          parse.t seq.t att.t stringtable.t record.t nibbler.t subst.t filt.t
 CFLAGS  = -I. -I.. -Wall -pedantic -ggdb3 -fno-rtti
 LFLAGS  = -L/usr/local/lib
 OBJECTS = ../TDB.o ../TDB2.o ../T.o ../T2.o ../parse.o ../text.o ../Date.o     \
@@ -66,3 +66,6 @@ subst.t: subst.t.o $(OBJECTS) test.o
 nibbler.t: nibbler.t.o $(OBJECTS) test.o
 	g++ nibbler.t.o $(OBJECTS) test.o $(LFLAGS) -o nibbler.t
 
+filt.t: filt.t.o $(OBJECTS) test.o
+	g++ filt.t.o $(OBJECTS) test.o $(LFLAGS) -o filt.t
+