at build time, create a subtree for use later which can be used to
build *only* kernel modules, but only for the afs sysname you were building
for in the first place currently.
replace existing build system with autoconf faceplate
====================
This delta was composed from multiple commits as part of the CVS->Git migration.
The checkin message with each commit was inconsistent.
The following are the additional commit messages.
====================
so we can fix the file modes
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commit withj correct file modes
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stuff which got left behind
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more stuff which was missed
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get this right so build completes
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also make these correct (no obj reference)
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so autoconf dependancy chain need not change
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set correct variable for obsolete buildng
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so we can more easily use autoconf'd CC var
