bitbake: Sync with upstream, fix some typos, add selfstamp flag

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@3227 311d38ba-8fff-0310-9ca6-ca027cbcb966

bitbake/ChangeLog

@@ -12,6 +12,19 @@ Changes in BitBake 1.8.x:
 	- Add bzr fetcher
 	- Add support for cleaning directories before a task in the form:
 	  do_taskname[cleandirs] = "dir"
+	- bzr fetcher tweaks from Robert Schuster (#2913)
+	- Add mercurial (hg) fetcher from Robert Schuster (#2913)
+	- Fix bogus preferred_version return values
+	- Fix 'depends' flag splitting
+	- Fix unexport handling (#3135)
+	- Add bb.copyfile function similar to bb.movefile (and improve movefile error reporting)
+	- Allow multiple options for deptask flag
+	- Use git-fetch instead of git-pull removing any need for merges when 
+	  fetching (we don't care about the index). Fixes fetch errors.
+	- Add BB_GENERATE_MIRROR_TARBALLS option, set to 0 to make git fetches 
+	  faster at the expense of not creating mirror tarballs.
+	- SRCREV handling updates, improvements and fixes from Poky
+	- Add bb.utils.lockfile() and bb.utils.unlockfile() from Poky
 
 Changes in Bitbake 1.8.8:
 	- Rewrite svn fetcher to make adding extra operations easier 

bitbake/lib/bb/build.py

@@ -297,7 +297,7 @@ def exec_task(task, d):
         task_graph.walkdown(task, execute)
 
     # make stamp, or cause event and raise exception
-    if not data.getVarFlag(task, 'nostamp', d):
+    if not data.getVarFlag(task, 'nostamp', d) and not data.getVarFlag(task, 'selfstamp', d):
         make_stamp(task, d)
 
 def extract_stamp_data(d, fn):

bitbake/lib/bb/utils.py

@@ -205,13 +205,13 @@ def Enum(*names):
 
 def lockfile(name):
     """
-    Use the file fn as a lock file, return when the lock has been aquired.
+    Use the file fn as a lock file, return when the lock has been acquired.
     Returns a variable to pass to unlockfile().
     """
     while True:
         # If we leave the lockfiles lying around there is no problem
         # but we should clean up after ourselves. This gives potential
-        # for races though. To work around this, when we aquire the lock 
+        # for races though. To work around this, when we acquire the lock 
         # we check the file we locked was still the lock file on disk. 
         # by comparing inode numbers. If they don't match or the lockfile 
         # no longer exists, we start again.