s/trriger/trigger/ and s/sepecify/specify/.

Fix all remaining typos, mainly in comments but also in few definitions and log messages, reported by me in PR kern/54889.
Also fixed some additional typos in comments, found on review of same files

Fix all remaining typos, mainly in comments but also in few definitions and log messages, reported by me in PR kern/54889.
Also fixed some additional typos in comments, found on review of same files or typos.

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Remove (the default) #define XXXDEBUG and add the options to the relevant
files.xxx file.

merge ktrace-lwp.

nuke trailing whitespace

Added new config hook type PCIINTR (handling PCI interrupt).
Added config hook APIs, config_connect, config_disconnect and
config_connected_call.
Supported PCIINTR type event in hpcio.

Vrc4172 GPIO support. This device is currently configured on PenCentra 130.

Machine independent GPIO interface.