Make regexp build and install officially

R=rsc
DELTA=335  (172 added, 156 deleted, 7 changed)
OCL=17167
CL=17180

src/lib/clean.bash

@@ -6,7 +6,7 @@
 
 rm -f $GOROOT/pkg/*
 
-for i in syscall os math net time
+for i in syscall os math net time http regexp
 do
 	cd $i
 	make nuke

src/lib/container/vector.go

@@ -56,6 +56,10 @@ func (v *Vector) Remove(i int) Element {
 }
 
 
+func (v *Vector) Reset() {
+	v.elem = v.elem[0:0];
+}
+
 func (v *Vector) Insert(i int, e Element) {
 	n := v.Len();
 	// range check unnecessary - done by runtime

src/lib/make.bash

@@ -33,7 +33,7 @@ do
 	6g -o $GOROOT/pkg/$base.6 $i
 done
 
-for i in net time http
+for i in net time http regexp
 do
 	echo; echo; echo %%%% making lib/$i %%%%; echo
 	cd $i

src/lib/regexp/Makefile

@@ -5,16 +5,22 @@
 A=6
 G=$(A)g
 L=$(A)l
+PKG=$(GOROOT)/pkg/regexp.$A
 
-all: main
+test:	main.$A test.$A
+	$L -o test test.$A
+	./test
 
-main:	main.6
-	$L -o main main.6
+install:	regexp.$A
+	cp regexp.$A $(PKG)
 
-main.6: regexp.6
+main:	main.$A
+	$L -o main main.$A
+
+main.$A: regexp.$A
 
 clean:
-	rm -f *.6 main
+	rm -f *.6 test
 
 %.6:	%.go
 	$G $<

src/run.bash

@@ -10,6 +10,12 @@ xcd() {
 	echo --- cd $1
 }
 
+(xcd lib/regexp
+make clean
+time make
+make test
+)
+
 (xcd ../usr/gri/gosrc
 make clean
 time make