Made the likewise changes on Unix.

unix/fontbutton.c

@@ -67,3 +67,9 @@ uiFontButton *uiNewFontButton(void)
 
 	return b;
 }
+
+void uiFreeFontButtonFont(uiFontDescriptor *desc)
+{
+	// TODO ensure this is synchronized with fontmatch.c
+	uiFreeText((char *) (desc->Family));
+}

unix/text.c

@@ -10,3 +10,8 @@ void uiFreeText(char *t)
 {
 	g_free(t);
 }
+
+int uiprivStricmp(const char *a, const char *b)
+{
+	return strcasecmp(a, b);
+}