update to separate jmps from fixed-calls and plt-dispatches. added options...

update to separate jmps from fixed-calls and plt-dispatches.  added options --protect-calls and --no-protect-calls

Former-commit-id: 0a913e8c27bf4943304ef262579342b15861b473

tools/selective_cfi/scfi_driver.cpp

@@ -43,7 +43,7 @@ void usage(char* name)
 "		[--protect-safefn|--no-protect-safefn]  \n"
 "		[ --common-slow-path | --no-common-slow-path ] \n"
 " \n"
-"default: --no-color --protect-jumps --protect-rets --protect-safefn --common-slow-path\n"; 
+"default: --no-color --protect-jumps --protect-calls --protect-rets --protect-safefn --common-slow-path\n"; 
 }
 
 int main(int argc, char **argv)