[DTrace-devel] some v2 patches

[eugene.loh at oracle.com]

Here are some v2 patches.  (I suppose they're really v3, but let us
ignore the original 14-patch series.)  Notice that two patches
underwent name changes:

#29:
old: Allow relocation of the ERROR PRID
new: Set the ERROR PRID in BPF code

#36:
old: Inline copyout_val()
new: Simplify trampoline_is_enabled()