bundlerepo: fix raw handling in revision()

bundlerepo: fix raw handling in revision()

Similar to fixes in revlog.py, this patch uses "rawtext" to explicitly label
contents expected to be raw, and makes sure content stored in _cache is raw
text.

Now test-flagprocessor.t points us to another issue.

--- a/mercurial/bundlerepo.py	Thu Apr 06 18:06:42 2017 -0700
+++ b/mercurial/bundlerepo.py	Thu Apr 06 17:45:47 2017 -0700
@@ -131,28 +131,28 @@
         if node == nullid:
             return ""
 
-        text = None
+        rawtext = None
         chain = []
         iterrev = rev
         # reconstruct the revision if it is from a changegroup
         while iterrev > self.repotiprev:
             if self._cache and self._cache[1] == iterrev:
-                text = self._cache[2]
+                rawtext = self._cache[2]
                 break
             chain.append(iterrev)
             iterrev = self.index[iterrev][3]
-        if text is None:
-            text = self.baserevision(iterrev)
+        if rawtext is None:
+            rawtext = self.baserevision(iterrev)
 
         while chain:
             delta = self._chunk(chain.pop())
-            text = mdiff.patches(text, [delta])
+            rawtext = mdiff.patches(rawtext, [delta])
 
-        text, validatehash = self._processflags(text, self.flags(rev),
+        text, validatehash = self._processflags(rawtext, self.flags(rev),
                                                 'read', raw=raw)
         if validatehash:
             self.checkhash(text, node, rev=rev)
-        self._cache = (node, rev, text)
+        self._cache = (node, rev, rawtext)
         return text
 
     def baserevision(self, nodeorrev):

--- a/tests/test-flagprocessor.t	Thu Apr 06 18:06:42 2017 -0700
+++ b/tests/test-flagprocessor.t	Thu Apr 06 17:45:47 2017 -0700
@@ -188,11 +188,33 @@
   4 changesets found
   $ hg --config extensions.strip= strip -r 2 --no-backup --force -q
   $ hg -R bundle.hg log --stat -T '{rev} {desc}\n' base64 2>&1 | egrep -v '^(\*\*|  )'
-  Traceback (most recent call last):
-  mercurial.mpatch.mpatchError: invalid patch
+  5 branching
+   base64 |  2 +-
+   1 files changed, 1 insertions(+), 1 deletions(-)
+  
+  4 base64-4
+   base64 |  2 +-
+   1 files changed, 1 insertions(+), 1 deletions(-)
+  
+  3 base64-three
+   base64 |  2 +-
+   1 files changed, 1 insertions(+), 1 deletions(-)
+  
+  2 base64-two
+   base64 |  2 +-
+   1 files changed, 1 insertions(+), 1 deletions(-)
+  
+  1 base64-single
+   base64 |  2 +-
+   1 files changed, 1 insertions(+), 1 deletions(-)
+  
+  0 base64-0
+   base64 |  1 +
+   1 files changed, 1 insertions(+), 0 deletions(-)
+  
 
   $ hg bundle -R bundle.hg --base 1 bundle-again.hg -q 2>&1 | egrep -v '^(\*\*|  )'
+  [1]
+  $ hg -R bundle-again.hg log --stat -T '{rev} {desc}\n' base64 2>&1 | egrep -v '^(\*\*|  )'
   Traceback (most recent call last):
-  mercurial.mpatch.mpatchError: invalid patch
-  $ hg -R bundle-again.hg log --stat -T '{rev} {desc}\n' base64 2>&1 | egrep -v '^(\*\*|  )'
-  abort: repository bundle-again.hg not found!
+  TypeError: Incorrect padding