Update NEWS and version for 2.0.1 release

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

NEWS

+Version 2.0.1
+  - added -H/-B startup parameters to gnt-instance, which will allow
+    re-adding the start in single-user option (regression from 1.2)
+  - the watcher writes the instance status to a file, to allow
+    monitoring to report the instance status (from the master) based on
+    cached results of the watcher's queries; while this can get stale if
+    the watcher is being locked due to other work on the cluster, this
+    is still an improvement
+  - the watcher now also restarts the node daemon and the rapi daemon if
+    they died
+  - fixed the watcher to handle full and drained queue cases
+  - hooks export more instance data in the environment, which helps if
+    hook scripts need to take action based on the instance's properties
+    (no longer need to query back into ganeti)
+  - instance failovers when the instance is stopped do not check for
+    free RAM, so that failing over a stopped instance is possible in low
+    memory situations
+  - rapi uses queries for tags instead of jobs (for less job traffic),
+    and for cluster tags it won't talk to masterd at all but read them
+    from ssconf
+  - a couple of error handling fixes in RAPI
+  - drbd handling: improved the error handling of inconsistent disks
+    after resync to reduce the frequency of "there are some degraded
+    disks for this instance" message
+  - fixed a bug in live migration when DRBD doesn't want to reconnect
+    (the error handling path called a wrong function name)
+
 Version 2.0.0 final
   - no changes from rc5
 

configure.ac

 # Configure script for Ganeti
 m4_define([gnt_version_major], [2])
 m4_define([gnt_version_minor], [0])
-m4_define([gnt_version_revision], [0])
+m4_define([gnt_version_revision], [1])
 m4_define([gnt_version_suffix], [])
 m4_define([gnt_version_full],
           m4_format([%d.%d.%d%s],