Add 1.4.7 pkgmcp to versioned CB

py reloc-ver.py nover 1_4_R1 < 1.4.7/pkgmcp2cb.srg > 1.4.7/pkgmcp2vcb.srg

While relocation using maven-shade-plugin or SpecialSource can replace
this mapping in most cases, sometimes having the explicit version is useful.
Add 1.5 prerelease <-> CB 1.4.7 mappings

py chain.py 1.4.7/num2obf.srg 1.5/num2obf.srg | sort > 1.5/obf-to-obf147.srg
py reverse-srg.py < 1.5/obf-to-obf147.srg | sort > 1.5/obf147-to-obf.srg
py chain.py 1.4.7/num2cb.srg 1.5/num2obf.srg | sort > 1.5/obf-to-cb147.srg
py reverse-srg.py < 1.5/obf-to-cb147.srg | sort > 1.5/cb147-to-obf.srg