Fix CMake generation of netcdf_meta.h
These changes seem to be correct for the generation of `netcdf_meta.h` in a CMake build.  I think this addresses
There is still an issue with the libnetcdf.settings
@@ -1972,8 +1972,8 @@ is_enabled(ENABLE_V2_API HAS_NC2)
is_enabled(ENABLE_NETCDF_4 HAS_NC4)
is_enabled(ENABLE_HDF4 HAS_HDF4)
is_enabled(ENABLE_NETCDF_4 HAS_HDF5)
-is_enabled(USE_SZIP HAS_SZLIB)
-is_enabled(USE_SZIP HAS_SZLIB_WRITE)
+is_enabled(USE_SZIP HAS_SZIP)
+is_enabled(USE_SZIP HAS_SZIP_WRITE)
is_enabled(STATUS_PNETCDF HAS_PNETCDF)
is_enabled(STATUS_PARALLEL HAS_PARALLEL)
is_enabled(ENABLE_PARALLEL4 HAS_PARALLEL4)
