abuild: implement new format for triggers variable

it contains a list with all triggers for all subpackages.

separate trigger script from path list with '='
separate paths in path list with ':'

example:

pkgname="foo"
subpackages="foo-libs foo-dev"
triggers="foo.trigger=/usr:/usr/lib/foo
	foo-libs.trigger=/usr:/usr/share/foo"

abuild.in

@@ -128,14 +128,22 @@ sanitycheck() {
 		*) die "$i: unknown install script suffix"
 		esac
 		if ! subpackages_has "$n" && [ "$n" != "$pkgname" ]; then
-			die "$i: install script does not match pkgname or any subpackages"
+			die "$i: install script does not match pkgname or any subpackage"
 		fi
-		[ -e "$startdir/$i" ] || die "install script $startdir/$i is missing"
+		[ -e "$startdir/$i" ] || die "install script $i is missing"
 	done
 	
-	[ -n "${triggers%%:*}" ] && [ ! -e "$startdir"/${triggers%%:*} ] \
-		&& die "trigger script $startdir/${triggers%%:*} is missing"
+	for i in $triggers; do
+		local f=${i%=*}
+		local p=${f%.trigger}
+		[ "$f" = "$i" ] && die "$f: triggers must contain '='" 
+		[ "$p" = "$f" ] && die "$f: triggers scripts must have .trigger suffix"
+		if ! subpackages_has "$p" && [ "$p" != "$pkgname" ]; then
+			die "$p: trigger script does not match pkgname or any subpackage"
+		fi
 
+		[ -e "$startdir"/$f ] || die "trigger script $f is missing"
+	done
 	if [ -n "$source" ]; then
 		for i in $source; do
 			if install_has "$i"; then
@@ -543,8 +551,9 @@ EOF
 	local i deps
 	deps="$depends"
 	if [ "$pkgname" != "busybox" ] && ! depends_has busbox; then
-		for i in $install ${triggers%%:*}; do
-			if head -n 1 "$startdir/$i" | grep '^#!/bin/sh' >/dev/null ; then
+		for i in $install $triggers; do
+			local s=${i%=*}
+			if head -n 1 "$startdir/$s" | grep '^#!/bin/sh' >/dev/null ; then
 				msg "Script found. busybox added as a dependency for $pkg"
 				deps="$deps busybox"
 				break
@@ -577,22 +586,26 @@ EOF
 	for i in $provides; do
 		echo "provides = $i" >> "$pkginfo"
 	done
-	if [ -n "$triggers" ]; then
-		echo "triggers = ${triggers#*:}" >> "$pkginfo"
-	fi
+	for i in $triggers; do
+		local f=${i%=*}
+		local dirs=${i#*=}
+		[ "${f%.trigger}" != "$name" ] && continue
+		echo "triggers = ${dirs//:/ }" >> "$pkginfo"
+	done
 	if [ -n "$install_if" ]; then
 		echo "install_if = $(echo $install_if)" >> "$pkginfo"
 	fi
 
 	local metafiles=".PKGINFO"
-	for i in $install ${triggers%%:*}; do
-		local n=${i%.*}
+	for i in $install $triggers; do
+		local f=${i%=*}
+		local n=${f%.*}
 		if [ "$n" != "$pkgname" ]; then
 			continue
 		fi
-		script=${i#$name}
+		script=${f#$name}
 		msg "Adding $script"
-		cp "$startdir/$i" "$controldir/$script" || return 1
+		cp "$startdir/$f" "$controldir/$script" || return 1
 		chmod +x "$controldir/$script"
 		metafiles="$metafiles $script"
 	done
@@ -846,7 +859,6 @@ update_abuildrepo() {
 # predefined splitfunc doc
 default_doc() {
 	depends="$depends_doc"
-	triggers="$triggers_doc"
 	pkgdesc="$pkgdesc (documentation)"
 	arch=${arch_doc:-"noarch"}
 
@@ -895,7 +907,6 @@ mod() {
 default_dev() {
 	local i= j=
 	depends="$pkgname $depends_dev"
-	triggers="$triggers_dev"
 	pkgdesc="$pkgdesc (development files)"
 
 	for i in $origsubpackages; do
@@ -1437,7 +1448,6 @@ fi
 if [ -n "$subpkgname" ]; then
 	origsubpackages="$subpackages"
 	subpackages=
-	triggers=
 fi
 pkgdir="$pkgbasedir/$pkgname"
 controldir="$pkgbasedir"/.control.${subpkgname:-$pkgname}