of NC_ERANGE errors, especially with unsigned types, resolving most
NCF-172 issues and confusion between long and long long types in
llibsrc/ncx.m4. Eliminated some unnecessary tests, e.g. tests
for negative values for unsigned types.
The in-memory files can be made persistent if nc_create is called with
NC_DISKLESS|NC_WRITE flags set. Initial test case also included.
- Modified ncio mechanism to support
multiple ncio packages; this is so we
can have posixio and memio operating
at the same time.
- cleanup up a bunch of lint issues (unused variables, etc).
