hdis doesn't compile under linux

[Rémi Forax]

Hi john, hi all.
hdis (hotspot disassembler) doesn't compile under linux, at least on my
linux box.

There are two problems, first 'uintptr_t' is not defined by default
you have to include stdint.h and then dynamic shared library functions
(dlopen, dlsym etc) are in libdl. (cf patch as attachment)

Rémi