Fixed bug setting pump curve params (#314) and in setting demand categories

-Split off calc. of a pump's curve coeffs. from getpumpparams to updatepumpparams.
- Fixed problem with initializing node demand category when default demand pattern set before node is created.
- Increased MAXLINE to 1024 to accomodate increase in MAXMSG.
- Replaced EN_geterror calls in input2.c with geterrmsg (it's bad form to call API functions in the body of the library)

src/input1.c

@@ -356,6 +356,7 @@ void adjustdata(EN_Project *pr)
     for (demand = node->D; demand != NULL; demand = demand->next) {
       if (demand->Pat == 0) {
         demand->Pat = hyd->DefPat;
+        strcpy(demand->Name, "");
       }
     }
   }