split pgm_options into itself + flagprocs so that the new flag set/clear functions can be placed into the library w/o bringing in the rest of pgm_options

flagprocs.c

@@ -0,0 +1,50 @@
+/* markdown: a C implementation of John Gruber's Markdown markup language.
+ *
+ * Copyright (C) 2007-2011 David L Parsons.
+ * The redistribution terms are provided in the COPYRIGHT file that must
+ * be distributed with this source code.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <errno.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "config.h"
+#include "markdown.h"
+#include "amalloc.h"
+
+#if HAVE_LIBGEN_H
+#include <libgen.h>
+#endif
+
+void
+mkd_set_flag_num(mkd_flag_t *p, unsigned long bit)
+{
+    if ( p && (bit < MKD_NR_FLAGS) )
+	set_mkd_flag(p, bit);
+}
+
+
+void
+mkd_clr_flag_num(mkd_flag_t *p, unsigned long bit)
+{
+    if ( p && (bit < MKD_NR_FLAGS) )
+	clear_mkd_flag(p, bit);
+}
+
+
+void
+mkd_set_flag_bitmap(mkd_flag_t *p, long bits)
+{
+    int i;
+    
+    if ( p == 0 )
+	return;
+
+    for (i=0; i < 8*sizeof(long) && i < MKD_NR_FLAGS; i++)
+	if ( bits & (1<<i) )
+	    set_mkd_flag(p, i);
+}