PWCSLMS-44 changed sheddable load fixed values to parameters
merged sheddable load class into sheddable load manager class - now there is only one (not an array of) dynamic sheddable load.
fixed SheddableLoadMgr and added unit test
PWCSLMS-44 - improved sheddable load calculation to remove oscillation; fixed unit tests
updated manual for PWCSLMS-44
Merge branch 'feat-R44' of https://github.com/thinkOfaNumber/Asim