Add bundle info file creation

As discussed in geany/geany#560.

build/gtk-bundle-from-msys2.sh

@@ -80,6 +80,8 @@ gtk3_dependency_pkgs="
 webkitgtk3
 "
 
+package_urls=""
+
 
 handle_command_line_options() {
 	for opt in "$@"; do
@@ -131,6 +133,15 @@ ${gtk_dependency_pkgs}
 "
 }
 
+_remember_package_source() {
+	if [ "$use_cache" = "yes" ]; then
+		package_url=`pacman -Sp mingw-w64-${ABI}-${2}`
+	else
+		package_url="${1}"
+	fi
+	package_urls="${package_urls}\n${package_url}"
+}
+
 _getpkg() {
 	if [ "$use_cache" = "yes" ]; then
 		package_info=`pacman -Qi mingw-w64-$ABI-$1`
@@ -148,6 +159,7 @@ extract_packages() {
 	# extract packages
 	for i in $pkgs; do
 		pkg=$(_getpkg $i)
+		_remember_package_source $pkg $i
 		if [ "$use_cache" = "yes" ]; then
 			if [ -e "$pkg" ]; then
 				echo "Extracting $pkg from cache"
@@ -244,6 +256,19 @@ cleanup_unnecessary_files() {
 	find . -type d -empty -delete
 }
 
+create_bundle_dependency_info_file() {
+	filename="ReadMe.Dependencies.Geany-Plugins.txt"
+	cat << EOF > "${filename}"
+This installation contains dependencies for Geany-Plugins which are
+distributed as binaries (usually .dll files) as well as additional
+files necessary for these dependencies.
+Following is a list of all included binary packages with their
+full download URL as used to create this installation.
+EOF
+	echo -e "${package_urls}" >> "${filename}"
+	unix2dos "${filename}"
+}
+
 create_zip_archive() {
 	if [ "$make_zip" = "yes" ]; then
 		echo "Packing the bundle"
@@ -258,4 +283,5 @@ initialize
 extract_packages
 move_extracted_files
 cleanup_unnecessary_files
+create_bundle_dependency_info_file
 create_zip_archive