* src/Makefile.msft: Refine comment about all tests execution
("make check" is redundant, it is enough to run only "make" to
auto-generate list_atomic.c and test_atomic_include.h).
# since we can't rely on sed. But we don't keep test_atomic_include.h in
# the development repository any longer, so if you want to run all tests
# for the sources obtained from the repository then
-# type "./autogen.sh; ./configure; make check; make clean" in Cygwin first.
+# type "./autogen.sh && ./configure && make -j && make clean" in Cygwin first.
# Otherwise type "nmake -f Makefile.msft check-noautogen" to run only the
# tests not requiring the source auto-generation.
# Win32 clients only need to include the header files.