Hi!

I've attached the new patches, with the necessary corrections.

Importantly, instead of a throwing build time #error when compiling
for platform on which GBD cannot load shared objects, now GDB simply
hides the jit-reader-load and jit-reader-unload commands.  So we get a
reduced-functionality build instead of no build at all.  Should this
be specified in a #warning?  I've added a small comment to the
documentation on the functionality not being available on platforms
which don't support loading shared objects at runtime.

Thanks!
-- 
Sanjoy Das
http://playingwithpointers.com