narrow: move changegroup.supportedoutgoingversions() override to core
Also document why we need cg3 or higher.
Differential Revision: https://phab.mercurial-scm.org/D2488
bdiff.o: ../../mercurial/bdiff.c
clang -g -O1 -fsanitize=fuzzer-no-link,address -c -o bdiff.o \
../../mercurial/bdiff.c
bdiff: bdiff.cc bdiff.o
clang -DHG_FUZZER_INCLUDE_MAIN=1 -g -O1 -fsanitize=fuzzer-no-link,address \
-I../../mercurial bdiff.cc bdiff.o -o bdiff
bdiff-oss-fuzz.o: ../../mercurial/bdiff.c
$$CC $$CFLAGS -c -o bdiff-oss-fuzz.o ../../mercurial/bdiff.c
bdiff_fuzzer: bdiff.cc bdiff-oss-fuzz.o
$$CXX $$CXXFLAGS -std=c++11 -I../../mercurial bdiff.cc \
bdiff-oss-fuzz.o -lFuzzingEngine -o $$OUT/bdiff_fuzzer
all: bdiff
oss-fuzz: bdiff_fuzzer
.PHONY: all oss-fuzz