Fix import of relative patches.

This closes bug #35244.
---
 quilt/import.in           |    8 ++++----
 quilt/scripts/patchfns.in |   17 ++++++++++++++---
 test/import.test          |    9 +++++++++
 3 files changed, 27 insertions(+), 7 deletions(-)

--- a/test/import.test
+++ b/test/import.test
@@ -246,3 +246,12 @@
 	$ cat patches/series
 	> patch1.diff
 	> patchR.diff
+
+# Also test importing when in a subdirectory
+	$ touch empty.patch
+	$ cd t
+	$ touch empty2.patch
+	$ quilt import ../empty.patch
+	> Importing patch ../empty.patch (stored as ../patches/empty.patch)
+	$ quilt import %{PWD}/empty2.patch
+	> Importing patch %{PWD}/empty2.patch (stored as ../patches/empty2.patch)
--- a/quilt/import.in
+++ b/quilt/import.in
@@ -152,16 +152,16 @@ then
 fi
 
 before=$(patch_after "$(top_patch)")
-for patch_file in "$@"
+for orig_patch_file in "$@"
 do
 	if [ -n "$opt_patch" ]
 	then
 		patch=$opt_patch
 	else
-		patch=${patch_file##*/}
+		patch=${orig_patch_file##*/}
 	fi
 
-	patch_file=$(find_patch_file "$patch_file") || exit 1
+	patch_file=$(find_patch_file "$orig_patch_file") || exit 1
 	merged_patch_file="$patch_file"
 
 	if is_applied $patch
@@ -199,7 +199,7 @@ do
 		printf $"Importing patch %s\n" "$(print_patch $patch)"
 	else
 		printf $"Importing patch %s (stored as %s)\n" \
-		       "$patch_file" \
+		       "$orig_patch_file" \
 		       "$(print_patch $patch)"
 
 		mkdir -p "${dest%/*}"
--- a/quilt/scripts/patchfns.in
+++ b/quilt/scripts/patchfns.in
@@ -641,10 +641,21 @@ find_patch_file()
 {
 	local name="$1"
 
-	if [ -r "$name" ]
+	if [ ${name:0:1} = / ]
 	then
-		echo "$name"
-		return
+		# Patch has absolute path
+		if [ -r "$name" ]
+		then
+			echo "$name"
+			return
+		fi
+	else
+		# Patch has a relative path
+		if [ -r "$SUBDIR$name" ]
+		then
+			echo "$SUBDIR$name"
+			return
+		fi
 	fi
 
 	local patch