Fix some warning in cmake

re: Issue Unidata#2939

The problem managing inter-dependent options.
I was looking for certain cases of the form, where x and y are options.
````
if( not x and y)
message(warning "not x => not y)
endif
````
However in a couple of cases (including the referenced Issue), I was only testing this:
````
if( not x)
message(warning "not x => not y)
endif
````

Fix is to correct the tests.

CMakeLists.txt

@@ -513,7 +513,7 @@ endif()
 
 # enable|disable all forms of network access
 option(NETCDF_ENABLE_REMOTE_FUNCTIONALITY "Enable|disable all forms remote data access (DAP, S3, etc)" ON)
-if(NOT NETCDF_ENABLE_REMOTE_FUNCTIONALITY)
+if(NOT NETCDF_ENABLE_REMOTE_FUNCTIONALITY AND NETCDF_ENABLE_DAP)
 message(WARNING "NETCDF_ENABLE_REMOTE_FUNCTIONALITY=NO => NETCDF_ENABLE_DAP[4]=NO")
 set(NETCDF_ENABLE_DAP OFF CACHE BOOL "NETCDF_ENABLE_REMOTE_FUNCTIONALITY=NO => NETCDF_ENABLE_DAP=NO" FORCE)
 set(NETCDF_ENABLE_DAP2 OFF CACHE BOOL "NETCDF_ENABLE_REMOTE_FUNCTIONALITY=NO => NETCDF_ENABLE_DAP2=NO" FORCE)
@@ -587,7 +587,7 @@ endif()
 
 # Option to support byte-range reading of remote datasets
 option(NETCDF_ENABLE_BYTERANGE "Enable byte-range access to remote datasets.." ${NETCDF_ENABLE_DAP})
-if(NOT NETCDF_ENABLE_REMOTE_FUNCTIONALITY)
+if(NOT NETCDF_ENABLE_REMOTE_FUNCTIONALITY AND NETCDF_ENABLE_BYTERANGE)
 message(WARNING "NETCDF_ENABLE_REMOTE_FUNCTIONALITY=NO => NETCDF_ENABLE_BYTERANGE=NO")
 set(NETCDF_ENABLE_BYTERANGE OFF CACHE BOOL "NETCDF_ENABLE_REMOTE_FUNCTIONALITY=NO => NETCDF_ENABLE_BYTERANGE=NO" FORCE)
 endif()
@@ -604,7 +604,7 @@ set(NETCDF_ENABLE_DAP_LONG_TESTS OFF CACHE BOOL "" FORCE)
 endif()
 
 # Provide a global control for remotetest.
-if ("$ENV{REMOTETESTDOWN}" STREQUAL "yes")
+if ("$ENV{REMOTETESTDOWN}" STREQUAL "yes" AND NETCDF_ENABLE_DAP_REMOTE_TESTS)
 message(WARNING "ENV(REMOTETESTDOWN) => NETCDF_ENABLE_DAP_REMOTE_TESTS == OFF")
 set(NETCDF_ENABLE_DAP_REMOTE_TESTS OFF CACHE BOOL "" FORCE)
 endif()
@@ -1035,8 +1035,8 @@ if (NOT NETCDF_ENABLE_PLUGINS AND NETCDF_ENABLE_NCZARR_FILTERS)
   set(NETCDF_ENABLE_NCZARR_FILTERS OFF CACHE BOOL "Enable NCZarr Filters." FORCE)
 endif()
 
-IF (NOT NETCDF_ENABLE_NCZARR)
-  message(WARNING "NETCDF_ENABLE_NCZARR==NO => NETCDF_ENABLE_NCZARR_FILTERS==NO")
+IF (NOT NETCDF_ENABLE_NCZARR AND NETCDF_ENABLE_NCZARR_FILTERS) 
+    message(WARNING "NETCDF_ENABLE_NCZARR==NO => NETCDF_ENABLE_NCZARR_FILTERS==NO")
   set(NETCDF_ENABLE_NCZARR_FILTERS OFF CACHE BOOL "Disable NCZARR_FILTERS" FORCE)
 endif()