tcpcryptd: Remove auto-generated files from git
linux: Initial update of the API changed in linux 3.8

This patch basically makes it compile against the version 3.8 of linux
with a patch that add tcpcrypt data structures to the TCP stack.

Header files were added, constant names changed structs updated
etc. It doesn't really guratantee that it will work, it is just the
first attempt to see it running.
tcpcryptd: disable ASM call to access stats about CPU cycles in ARM

There seems to be other APIs for accessing CPU cycling stats, but they
would need to be enabled in kernel mode.

Since this feature is only used in the profiler, I'll just disable it
for now and probably enable it again enabling the access for the stats
from the kernel space anytime soon.
tcpcryptd: Add ARM alternatives for ASM code used in checksum.c