Moved CA client examples into their own caClientApp

Added caServerApp - copied from src/cas/example/simple
Made simpleApp significantly more useful
Made exampleApp use the _APPNAME_ macro instead of example in various places

src/makeBaseApp/top/caClientApp/caExample.c

@@ -0,0 +1,25 @@
+/*caExample.c*/
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "cadef.h"
+
+main(int argc,char **argv)
+{
+    double	data;
+    chid	mychid;
+
+    if(argc != 2) {
+	fprintf(stderr,"usage: caExample pvname\n");
+	exit(1);
+    }
+    SEVCHK(ca_context_create(ca_disable_preemptive_callback),"ca_context_create");
+    SEVCHK(ca_create_channel(argv[1],NULL,NULL,10,&mychid),"ca_create_channel failure");
+    SEVCHK(ca_pend_io(5.0),"ca_pend_io failure");
+    SEVCHK(ca_get(DBR_DOUBLE,mychid,(void *)&data),"ca_get failure");
+    SEVCHK(ca_pend_io(5.0),"ca_pend_io failure");
+    printf("%s %f\n",argv[1],data);
+    return(0);
+}