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unlink() is now able to remove broken symbolic links on Unix-alikes.
R CMD SHLIB on Windows will call the first target (not 'all') in Makevars[.win] in future versions: so make 'all' the first target if you have any.
R CMD SHLIB now calls the makefiles with target 'all' on all platforms, not just on Windows: this is only relevant when a Makevars[.win] is used that contains targets (not in general recommended): for backwrds compatibility the first target should be named 'allFor R CMD SHLIB on Windows the default 'all' target only makes the DLL, and no longer call targets 'before' and 'after'.
The compiled loess() code hads been updated to the current version of dloess from Netlib. This includes patches from Ben Tyner which correct some errors when degree = 0 and hence solve PR#13570.