HPCC-12709 Allow huge pages to be separately configured for the master

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Not new in this commit, but it can either be a 'heapUseHugePages=true' configuration OR a 'heapUseTransparentHugePages=true' configuration, with 'heapUseHugePages' taking precedence if set, right?

The xsd tool tips could clarify that..