mq: fixed ENOENT when qrename to new/directory.patch

MQ patch name can contain slashes, e.g. 'foo/bar.patch'.

Currently "qnew foo/bar.patch" works, but
"qrename foo/bar.patch new/dir.patch" fails with
"No such file or directory".

Also added test case for "qnew foo/bar.patch"

hgext/mq.py

@@ -2311,6 +2311,9 b' def rename(ui, repo, patch, name=None, *'
         q.applied[info[0]] = statusentry(info[1], name)
     q.applied_dirty = 1
 
+    destdir = os.path.dirname(absdest)
+    if not os.path.isdir(destdir):
+        os.makedirs(destdir)
     util.rename(q.join(patch), absdest)
     r = q.qrepo()
     if r:

tests/test-mq-qnew

@@ -25,6 +25,12 b' runtest() {'
 
     hg qinit -c
 
+    echo '% qnew with name containing slash'
+    hg qnew foo/bar.patch
+    hg qseries
+    hg qpop
+    hg qdelete foo/bar.patch
+
     echo '% qnew with uncommitted changes'
     echo a > somefile
     hg add somefile

tests/test-mq-qnew.out

@@ -8,6 +8,10 b' abort: ".hgignore" cannot be used as the'
 abort: ".mqfoo" cannot be used as the name of a patch
 abort: "foo#bar" cannot be used as the name of a patch
 abort: "foo:bar" cannot be used as the name of a patch
+% qnew with name containing slash
+foo/bar.patch
+popping foo/bar.patch
+patch queue now empty
 % qnew with uncommitted changes
 uncommitted.patch
 % qnew implies add
@@ -58,6 +62,10 b' abort: ".hgignore" cannot be used as the'
 abort: ".mqfoo" cannot be used as the name of a patch
 abort: "foo#bar" cannot be used as the name of a patch
 abort: "foo:bar" cannot be used as the name of a patch
+% qnew with name containing slash
+foo/bar.patch
+popping foo/bar.patch
+patch queue now empty
 % qnew with uncommitted changes
 uncommitted.patch
 % qnew implies add

tests/test-mq-qrename

@@ -22,6 +22,9 b' ls .hg/patches/bar'
 hg qrename bar/renamed baz
 hg qseries
 ls .hg/patches/baz
+hg qrename baz new/dir
+hg qseries
+ls .hg/patches/new/dir
 cd ..
 
 echo % test patch being renamed before committed

tests/test-mq-qrename.out

@@ -5,4 +5,6 b' bar/renamed'
 renamed
 baz
 .hg/patches/baz
+new/dir
+.hg/patches/new/dir
 % test patch being renamed before committed