Matt Harbison <matt_harbison@yahoo.com> [Thu, 09 Aug 2018 23:52:45 -0400] rev 39073
cext: fix Windows warning about implicit conversion of 32-bit shift to 64 bit
mercurial/cext/revlog.c(1541) : warning C4334: '<<' : result of 32-bit shift
implicitly converted to 64 bits (was 64-bit shift int ended?)