Fortran color CALL as keyword

Color the word CALL as keyword.

src/fortrancode.l

@@ -731,7 +731,7 @@ PREFIX    (RECURSIVE{BS_}|IMPURE{BS_}|PURE{BS_}|ELEMENTAL{BS_}){0,3}(RECURSIVE|I
 
  /*-------- ignore ------------------------------------------------------------*/
 
-<Start>{IGNORE}/{BS}"("?                { // do not search keywords, intrinsics... TODO: complete list
+<Start>{IGNORE}/{BS}"("                 { // do not search keywords, intrinsics... TODO: complete list
                                           codifyLines(yytext);
                                         }
  /*-------- inner construct ---------------------------------------------------*/
@@ -979,7 +979,9 @@ PREFIX    (RECURSIVE{BS_}|IMPURE{BS_}|PURE{BS_}|ELEMENTAL{BS_}){0,3}(RECURSIVE|I
  /*-------- subprog calls  -----------------------------------------*/
 
 <Start>"call"{BS_}                      {
+                                          startFontClass("keyword");
                                           codifyLines(yytext);
+                                          endFontClass();
                                           yy_push_state(YY_START);
                                           BEGIN(SubCall);
                                         }