Add a few tests which weren't being run.

R=r
DELTA=4  (4 added, 0 deleted, 0 changed)
OCL=26797
CL=26814

src/lib/Makefile

@@ -43,6 +43,8 @@ TEST=\
 	bignum\
 	bufio\
 	exec\
+	flag\
+	log\
 	once\
 	sort\
 	strings\

src/run.bash

@@ -24,6 +24,7 @@ maketest() {
 }
 
 maketest \
+	lib/container\
 	lib/fmt\
 	lib/go\
 	lib/hash\
@@ -37,6 +38,7 @@ maketest \
 	lib/strconv\
 	lib/tabwriter\
 	lib/time\
+	lib/unicode\
 
 # all of these are subtly different
 # from what maketest does.