Compute the size of off_t and bypass the checks for fopen64() and stat64()
if off_t is 64-bit. Otherwise, we get fatal (due to -Werror) warnings on
Mac OS X 10.6 because stat64() is deprecated on that host.
".set doublefloat", but were not edited after copy-paste.
I noticed this because compared to prebuilt as.info 1) on NetBSD index
entries are collated differently; 2) for some duplicate index entries
there are no additional "foo <n>" entries in the final output and (b/c
of #1 I guess) we pick a different one.
For the record, the other duplicate entry is in c-tic54x.texi where
both struct and union directive descriptions have:
@cindex @code{tag} directive, TIC54X
Prebuilt file only lists the first occurence in the generated index
and we list only the second.
The MIPS false duplicate is easy to fix, but I'm too lazy to debug
makefino to figure out why the second, real duplicate is lost.
