Add 1.3.2 mappings from MCP
Add 13w09c snapshot mappings generated from MCP 7.39
Add CB <-> numeric srg mappings for 1.4.7

py chain.py 1.4.7/obf2num.srg 1.4.7/obf2cb.srg  > 1.4.7/cb2num.srg
py reverse-srg.py < 1.4.7/cb2num.srg > 1.4.7/num2cb.srg
Add 13w09c snapshot <-> CB 1.4.7 mappings

Created by chaining cross-version through numeric srg names:

py chain.py 1.4.7/num2obf.srg 13w09c/num2obf.srg | sort > 1.4.7/obf-to-obf147.srg
py reverse-srg.py < 1.4.7/obf-to-obf147.srg | sort > 1.4.7/obf147-to-obf.srg
py chain.py 1.4.7/num2cb.srg 13w09c/num2obf.srg | sort > 13w09c/obf-to-cb147.srg
py reverse-srg.py < 13w09c/obf-to-cb147.srg | sort > 13w09c/cb147-to-obf.srg