main/ngrep: fix segfault on invalid filters and add -dbg

A comment in configure.in says:

> dnl For libpcap's that don't need the restart function called for
> dnl multiple lexer passes, allow them to turn it off here.  This option
> dnl exists solely to address a very rude email from the maintainer
> dnl indicating that it shouldn't be called directly (and of course he
> dnl was wrong because this is still needed).

This indicates that you should not really call pcap_restart() directly,
so we use this --disable-pcap-restart.

This fixes segfault when the filter is invalid.

ref #4466

main/ngrep/APKBUILD

@@ -2,23 +2,30 @@
 # Maintainer: Francesco Colista <francesco.colista@gmail.com>
 pkgname=ngrep
 pkgver=1.45
-pkgrel=1
+pkgrel=2
 pkgdesc="A grep-like utility that allows you to search for network packets on an interface"
 url="http://ngrep.sourceforge.net/"
 arch="all"
-license="custom"
+license="BSD"
 depends=
 depends_dev="libpcap-dev"
-makedepends="$depends_dev"
+makedepends="$depends_dev autoconf automake"
 install=""
-subpackages=""
-source="http://downloads.sourceforge.net/sourceforge/ngrep/$pkgname-$pkgver.tar.bz2"
+subpackages="$pkgname-dbg"
+source="http://downloads.sourceforge.net/sourceforge/ngrep/$pkgname-$pkgver.tar.bz2
+	no-strip.patch"
 
 _builddir="$srcdir"/$pkgname-$pkgver
 
 prepare() {
 	cd "$_builddir"
 	update_config_sub || return 1
+	for i in $source; do
+		case $i in
+		*.patch) msg $i; patch -p1 -i "$srcdir"/$i || return 1;;
+		esac
+	done
+	autoreconf -vif
 }
 
 build() {
@@ -29,6 +36,7 @@ build() {
 		--prefix=/usr \
 		--sysconfdir=/etc \
 		--with-pcap-includes=/usr/include/pcap \
+		--disable-pcap-restart \
 		|| return 1
 	make || return 1
 }
@@ -38,4 +46,9 @@ package() {
 	install -Dm644 LICENSE.txt "$pkgdir"/usr/share/licenses/custom/$pkgname/LICENSE
 }
 
-md5sums="bc8150331601f3b869549c94866b4f1c  ngrep-1.45.tar.bz2"
+md5sums="bc8150331601f3b869549c94866b4f1c  ngrep-1.45.tar.bz2
+312ad860fc42df3248d6209431162eac  no-strip.patch"
+sha256sums="aea6dd337da8781847c75b3b5b876e4de9c58520e0d77310679a979fc6402fa7  ngrep-1.45.tar.bz2
+d2971dcf822f745453b9736032dfdd9b7e3bd57368b26cbbebf830105a46a09d  no-strip.patch"
+sha512sums="0feb4080f834449d57ae99897c573d2b8148711cfb550fa4ff415169dedb1f0d23f4b03f625660162ca72f8ad06e19874c1af46da6afd8f8fe8dd553558c14f7  ngrep-1.45.tar.bz2
+28488c548cd409ac99af7eead37e3d7596b8c0ac2b9064de5ae7cc815beb65fc8488e8400d6a5d81eab128dc0a97b4e252e2503baf35704138a2226f7d3375d7  no-strip.patch"

main/ngrep/no-strip.patch

@@ -0,0 +1,10 @@
+--- ./configure.in.orig
++++ ./configure.in
+@@ -161,7 +161,6 @@
+ dnl OS-specific options
+ dnl
+ 
+-STRIPFLAG="-s"
+ HAVE_DUMB_UDPHDR="0"
+ 
+ case "$target_os" in