error occurs after an "exit:" label.
Corrected a dozen Coverity errors (mainly allocation issues, along with a few
other things):
711711, 711802, 711803, 711905, 970825, 996123, 996124, 1025787,
1047274, 1130013, 1130014, 1139538
Refactored internal fill-value code to correctly handle string types, and
especially to allow NULL pointers and null strings (ie. "") to be
distinguished. The code now avoids partially aliasing the two together
(which only happened on the 'write' side of things and wasn't reflected on
the 'read' side, adding to the previous confusion).
Probably still weak on handling fill-values of variable-length and compound
datatypes.
Refactored the recursive metadata reads a bit more, to process HDF5 named
datatypes and datasets immediately, avoiding chewing up memory for those
types of objects, etc.
Finished uncommenting and updating the nc_test4/tst_fills2.c code (as I'm
proceeding alphabetically through the nc_test4 code files).
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.
in code and scripts.
Fixed bug NCF-171: error reading external int into longlong or writing
from longlong array to external int on 32-bit platforms and classic
format files.
Promoted test demonstrating NCF-171 bug from longlong array from
"extra test" to "test".
