add plib.h to mcapi test, optimize MPLAB ctaocrypt_test project

mplabx/ctaocrypt_test.X/main.c

@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <p32xxxx.h>
+#include <plib.h>
 #include <sys/appio.h>
 
 /* func_args from test.h, so don't have to pull in other junk */
@@ -38,6 +39,8 @@ typedef struct func_args {
  */
 int main(int argc, char** argv) {
 
+    SYSTEMConfigPerformance(80000000);
+
     DBINIT();
     printf("CTaoCrypt Test:\n");