added basic probability computation to global routing matrix, and debug output. Fixed bug in Float serialisation (this should be improved btw)

fixed up versioning stuffup.

fixed auto revision update.
Fixed version files (*.in)
changed re-hashign strategy. Now uses in priority the system time of the index file as a reference for new files. This automatically accounts for changes in system time and fixes the re-hashing bug for daylight changing time. In case the reference time cannot be establishd, the comparison reverts to the old method. This change is backward compatible and should not cause a re-hash. Report to the devs if it does.
removed false warning that come up when openning a non existing file in ftFileCreator.
Changes according to experiments from jolavilette:
- set desiredRate of peers to 10MB/s instead of 1MB/s
- maximum number of active chunks per peer is now 20 (that was a serious limiting factor)
- ticks that bring no data are not accounted for in the speed estimate anymore. The data is averaged over all ticks since the previous 
 non zero data chunk -> this brings much more stability to sources and removes lots of oscillation.

The maximum theoretical speed per source peer is therefore 13MB/s (in "Average" DL mode), whereas previously it was 1.3MB/s
removed debug output
computation/update of routing probabilities
show fingerprint in ConfCertDialog, and splitted the string with spaces. Removed the use of the ambiguous peer id for both pgp and locations ids
Channels:
- Use destination directory when manually downloading a file from a channel
- Show destination directory in channel details
- Fixed utf8 issue when choosing the destination directory
Added back the Subscribe Button to Channels
fixed last received time stamp so that it displays the last time data was actually received
fixed the bug that caused unwanted direct downloads. A check was missing in ftController::FileRequest
do not accept keys without a uid. Previously this was crashing RS
fixed bug introduced in 6910, due to calling member on deleted mCreator
filter out disallowed direct sources from file request source list. Should systematically prevent unwanted direct transfers
reduced string for lol bomb filtering, to filter out <\?xml* instead of <\?xml\ *
fixed up some debug text (patch from H.Morgan)
fixed display of correct IP for connected friends. Only the external IP was shown previously. Port is not shown because it is random and could be misleading. Needs full recompilation