* Split up the thirdparty code into the thirdparty folder (#3637)
* Create a new kimath static library containing all the math functions
This is part of cleaning the build system for #1906.
This means that utility programs no longer have to be manually
added to the COMBINED_UTILITY, they self-register their
information at static init time. This is basically the same concept
as the Boost test registration.
All utilities need to do now is register their UTILITY_PROGRAM info
struct with the UTILITY_REGISTRY::Register method. No headers required.