Fixed incorrect counting of free cores in host --details

Free cores were being incorrectly counted, by ignoring the
number of disabled cores. This figure has been updated to
reflect any number of disabled cores. Accessed through
node_search -[hostname] --details

README

@@ -51,3 +51,4 @@
   Add jobs to Host groups --details output
   Make --stats option for total core usage. Possible a --report also, for total number
   of jobs, users, utilization, % nodes down, etc.
+  Add -j option to search for a specific job-id.

node_search.py

@@ -806,7 +806,8 @@ def print_detailed_host(total_cores, used_cores, total_nodes, empty_nodes, desir
     print('\nDetailed info pertaining to: ' + desired_host)
     print('Total Nodes: {0}'.format(str(len(node_list)))) 
     print('Total Cores : {0}'.format(total_cores) + PRINT_INDENT + 'Used Cores: {0}'.format(used_cores)
-          + PRINT_INDENT + 'Free Cores: {0}'.format(str(total_cores - used_cores)) )
+          + PRINT_INDENT + 'Free Cores: {0}'.format(str(total_cores - used_cores - disabled_cores)) 
+          + PRINT_INDENT + 'Disabled Cores: {0}'.format(disabled_cores))
     print('\nThe following is a list of each node within {0}:\n'.format(desired_host))
     print('Node name'.ljust(int(TERMWIDTH/2)) + 'Used Cores/Total Cores')
     for node in node_list: