Specify processor capabilities at db compile time

[zcabh-21]

• Enable the ability to explicitly choose the processor capabilities at db compilation time rather than what it currently does which is to infer processor capabilities from the db compilation host.
• We can avoid the "compiled for a different platform" warning that causes a runtime performance penalty
• We can work around the SIGSEGV issue (see: SIGSEGV during scan execution on Scanner class  #71 )

[gliwka]

#71 should be fixed on develop.

Feel free to submit a PR implementing the processor capabilities.