main/net-snmp: fix bootstrap issue

net-snmp-gui has perl-net-snmp in its depends but there was noting
to help abuild to know that perl-net-snmp had to be built first.

We solve that by adding perl-net-snmp to makedepends

main/net-snmp/APKBUILD

@@ -2,14 +2,16 @@
 # Maintainer: Carlo Landmeter <clandmeter@gmail.com>
 pkgname=net-snmp
 pkgver=5.7.1
-pkgrel=6
+pkgrel=7
 pkgdesc="Simple Network Management Protocol"
 url="http://www.net-snmp.org/"
 arch="all"
 license="GPL"
 depends=
 depends_dev="openssl-dev"
-makedepends="perl-dev openssl-dev"
+# we need perl-net-snmp in make depends for bootstrapping issues
+# net-snmp-gui subpackage has perl-net-snmp as depends
+makedepends="perl-dev openssl-dev perl-net-snmp"
 subpackages="$pkgname-doc $pkgname-dev $pkgname-libs $pkgname-agent-libs:alibs
 	$pkgname-perl:pl $pkgname-gui $pkgname-tools"
 source="http://downloads.sourceforge.net/$pkgname/$pkgname-$pkgver.tar.gz