The existing probes, all two of them, cause a great deal of pain for
people trying to build libuv on Linux because of SystemTap's dtrace(1)
utilitity not understanding the -xnolibs flag.
We could hack around that but it's easier to just remove the probes:
they are largely useless and unused while still needing a lot of
supporting infrastructure. This commit removes 200 lines of code
and configuration.
Refs joyent/libuv#1478.
Switch to the build tool everyone loves to hate. The Makefile has
served us well over the years but it's been acquiring more and more
features that autotools gives us for free, like easy static+shared
library building, sane install targets, and so on.
This commit drops MinGW support. If there is demand for it, we'll
re-add it.
