Added properties, signals and start/stop calls to LmFeaturePing.

Added stubs for LmFeaturePing which will hold the XMPP Ping feature. To keep lm-connection.c as clean as possible the XMPP Ping (XEP-0199) code will live in lm-feature-ping.[ch] instead.

Use XMPP Ping (XEP-0199) instead of white space ping for keep alive. [#15] This patch introduces the use of XMPP Pings (defined in XEP-0199) for pinging the server instead of just sending white space messages to keep the connection alive through NAT routers. It also adds the feature of disconnecting if three pings in a row are sent unanswered. [#15 tagged:committed responsible:Hallski state:resolved] committer: Mikael Hallendal <micke@imendio.com>

Fixed a crash when lm_connection_close was called. Check if the socket exists before trying to cancel the asyncns call on it.

Create connect_data in LmOldSocket, revert a segfault when working on LmResolver. Was a bit agressive when removing old code as I was putting the LmResolver code in place.

Added _lm_connection_get_server that returns the server string. The function uses the host part of the JID used, if it is not set the function will return a copy of the connect host. Also updated to use this internally in LmConnection as the same code was duplicated in a couple of places.

Added _lm_connection_get_context as internal function. Returns the GMainContext currently used by the LmConnection. Internal for now, will be made public if needed from application level.

Fixed compile error when asyncns is not available [#17] Fixed a typo in lm-resolver that breaks compilation when libasyncns is not available. [#17 tagged:committed responsible:Hallski state:resolved] committer: Mikael Hallendal <micke@imendio.com>

Bumped version to 1.4.2

Make lm_sha_hash thread safe. Fixes LM-64 Compute the checksum in a stack-local variable and the result is printed into a newly allocated string of 41 bytes which is returned afterwards. Patch from Andreas Köhler. committer: Mikael Hallendal <micke@imendio.com>