[Pharo-dev] [update 2.0] #20619

20619 ----- 11209 backport 2.0: Add RPackageSet cache https://pharo.fogbugz.com/f/cases/11209 The speedup on loading MC packages is 3x or more, so I though it is a crime not to make it available immediately, since there is no bug reports in all our tests and usages. Thanks Thierry for the backport! Diff information: http://ss3.gemstone.com/ss/Pharo20/RPackage-Core-EstebanLorenzano.218.diff http://ss3.gemstone.com/ss/Pharo20/Monticello-EstebanLorenzano.784.diff http://ss3.gemstone.com/ss/Pharo20/Metacello-Platform.pharo20-EstebanLorenza...