Add support for linkahead-client.json

caosdb-client.json is still kept, but linkahead has precedence.

include/linkahead/constants.h.in

@@ -42,6 +42,14 @@ __attribute__((unused)) static const char* COMPATIBLE_SERVER_VERSION_PRE_RELEASE
  */
 __attribute__((unused)) static const char* LIBLINKAHEAD_CONFIGURATION_FILES_PRECEDENCE[] = {
   "$LINKAHEAD_CLIENT_CONFIGURATION",
+  "linkahead_client.json",
+  "linkahead-client.json",
+  ".linkahead_client.json",
+  ".linkahead-client.json",
+  "$HOME/linkahead_client.json",
+  "$HOME/linkahead-client.json",
+  "$HOME/.linkahead_client.json",
+  "$HOME/.linkahead-client.json"
   "caosdb_client.json",
   "caosdb-client.json",
   ".caosdb_client.json",