Fakeroot

[garrettr]

Improvements to the grsec kernel build docs based on experiences repeatedly building kernels while figuring out the issues with out-of-tree bnx2 drivers.

• Optionally recommends using ccache to speed up repeated builds
• Use fakeroot with make-kpkg, which appears to resolve the "multiple kernel builds on the same box fail" issue. See commit message for details.
• Formatting improvements

[garrettr]

@dolanjs @conorsch Reviewplz

[conorsch]

These edits are big improvement. Ran through multiple compilations on three machines, with no issues. In fact, using fakeroot seems to have solved the intermittent problem of not being able to recompile a kernel on the same host immediately after a successful build.

Using ccache according to the linked blogpost did not speed up my build times, but it also didn't slow them down any, so I'm fine with leaving the optional recommendation in there as-is.

:+1: Fine to merge.