[RFC]: More robust build sys for UMR

[Edward O'Callaghan]

Keeping with the tradition of changing the build system on initial
release, here we go again.. This follow series introduces the cmake
build system that is intended to be a little more robust across
various distros and presumably the BSD's also. The installation
prefix is configurable in the usual cmake way:
 `cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr ..`

Please kindly review,

Edward O'Callaghan (4):
 [PATCH 1/4] cmake_modules: Add libpciaccess finder
 [PATCH 2/4] cmake: Initial build system
 [PATCH 3/4] README: minor update for cmake buildsys
 [PATCH 4/4] drop orginal Makefile && stub bin/ directory