Fix more compiler warnings (comma at end of enum)

These warnings are benign but ... I fixed them nevertheless.

fltk-options/fltk-options.cxx

@@ -75,7 +75,7 @@ typedef enum {
 typedef enum {
   FO_END_OF_LIST = 0,
   FO_HEADLINE,
-  FO_OPTION_BOOL,
+  FO_OPTION_BOOL
   // FO_OPTION_INT,     // not yet implemented
   // FO_OPTION_TEXT,    // not yet implemented
   // FO_OPTION_SCHEME,  // not yet implemented

fluid/Fd_Snap_Action.h

@@ -25,7 +25,7 @@ enum {
   FD_STORE_INTERNAL,
   FD_STORE_USER,
   FD_STORE_PROJECT,
-  FD_STORE_FILE,
+  FD_STORE_FILE
 };
 
 class Fd_Layout_Preset {

test/unittests.h

@@ -55,7 +55,7 @@ enum {
   UT_TEST_SCROLLBARSIZE,
   UT_TEST_SCHEMES,
   UT_TEST_SIMPLE_TERMINAL,
-  UT_TEST_CORE,
+  UT_TEST_CORE
 };
 
 // This class helps to automatically register a new test with the unittest app.