Add note to man page regarding autorun and LD_PRELOAD.

closes #72
Honour correctly "disable_border" in max_stack
Fix focus_urgent.

fixes #81
Fix stacking issue on (re)start when managing unmanaged windows.

Fix always_raise.
Fix urgency indicator issue.
Only the last window in a workspace would register.

Fixes #83
Prepare for release 2.6.1.
Use poll(2) instead of select(2).
Prevent possible focus change on release of a pointer grab.
pull latest tag + commit digest
osx also likes to see the extended build version
Merge pull request #1 from conformal/master

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