tzutils: fix version, set bootstrap=yes

Some packages require tzdata to testing, however, adding `tzdata` to
those checkdepends will break masterdir, since `tzdata` provides
`/usr/share/zoneinfo/UTC`, hence, it will be removed upon cleanup.

Adding tzdata into base-chroot requires tzdata, thus tzutils is bootstrappable.

Let's do it.

srcpkgs/tzutils/template

@@ -1,16 +1,18 @@
 # Template file for 'tzutils'
 pkgname=tzutils
 version=2021a
-revision=1
+revision=2
+bootstrap=yes
 wrksrc="tz-${version}"
 short_desc="Time zone and daylight-saving time utilities"
-maintainer="Anthony Iliopoulos <ailiop@altatus.com>"
+maintainer="Đoàn Trần Công Danh <congdanhqx@gmail.com>"
 license="Public Domain, BSD-3-Clause"
 homepage="https://www.iana.org/time-zones"
 distfiles="https://github.com/eggert/tz/archive/${version}.tar.gz"
 checksum=bd7ecd99cbb0a2f15bb7e38be2cbc04dced89922fce4ac0ffcd1ca844ba9362f
 
 do_build() {
+	echo "$version" >version
 	make TZDIR=/usr/share/zoneinfo CC=$CC CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS"
 }
 
@@ -21,8 +23,5 @@ do_install() {
 	vman zic.8
 	vman zdump.8
 	vman tzselect.8
-}
-
-post_install() {
 	vlicense LICENSE
 }