Enable usermode_pci for non-PC platforms

A fixup for #257 following discussion here:

https://github.com/machinekit/machinekit/pull/257/files#r15151417
Disable xenomai-kernel threads on non-PC platforms

Fixes #63
debian : exclude pasm from debian packaging
Fix for issue #265
Signed-off-by: Charles Steinkuehler <charles@steinkuehler.net>
Partial fix for #263
rtapi_compat: swapped xenomai flavor priority
Merge pull request #267 from cdsteinkuehler/pasm-fix

debian : exclude pasm from debian packaging
Merge pull request #268 from kinsamanka/partial_#263

Partial fix for #263
Merge pull request #261 from zultron/arm-no-xeno-k

Disable xenomai-kernel threads on non-PC platforms
Merge pull request #260 from zultron/arm-usermode-pci

Enable usermode_pci for non-PC platforms
tp: fix for G95 pausing bug from Rick

Conflicts:
	src/emc/tp/tp.c
Merge pull request #272 from mhaberler/g95-fix

tp: fix for G95 pausing bug from Rick