CMake options prefix

[artiomn]

Probably is not a bad idea to add prefix to the options. I.e. INTEL_PCM_.

After this, the options will be named not like NO_ASAN, but like INTEL_PCM_NO_ASAN.

Why:

• Visually "highlight" PCM options.
• Remove potential intersection with other projects. I.e., somebody using add_subdirectory and has an option with a name similar to PCM. He doesn't want to affect the PCM option, but he does and needs to make workarounds.
• Remove potential intersection with special CMake variables.

How:

• Add new options with prefixes.
• Add stub for old option names, which will print deprecation warning.
• Remove old names in some future version.

P.S.: Probably CMake option command will be more natural and convenient to use than "ordinary variables".