patch 7.4.1262

Problem:    The channel callback is not invoked.
Solution:   Make a list of pending callbacks.

patch 7.4.1261

Problem:    Pending channel messages are garbage collected. Leaking memory in
            ch_sendexpr().  Leaking memory for a decoded JSON string.
Solution:   Mark the message list as used. Free the encoded JSON.  Don't save
            the JSON string.

patch 7.4.1260

Problem:    The channel feature doesn't work on Win32 GUI.
Solution:   Use WSAGetLastError(). (Ken Takata)

patch 7.4.1259

Problem:    No test for what patch 7.3.414 fixed.
Solution:   Add a test. (Elias Diem)

patch 7.4.1258

Problem:    The channel test can fail if messages arrive later.
Solution:   Add a short sleep. (Jun T.)

patch 7.4.1257

Problem:    Channel test fails in some configurations.
Solution:   Add check for the +channel feature.

patch 7.4.1256

Problem:    On Mac sys.exit(0) doesn't kill the test server.
Solution:   Use self.server.shutdown(). (Jun Takimoto)

patch 7.4.1255

Problem:    Crash for channel "eval" command without third argument.
Solution:   Check for missing argument.

patch 7.4.1254

Problem:    Opening a second channel causes a crash. (Ken Takata)
Solution:   Don't re-allocate the array with channels.

patch 7.4.1253

Problem:    Python test server not displaying second of two commands.
            Solaris doesn't have "pkill --full".
Solution:   Also echo the second command. Use "pkill -f".