python: patched webbrowser module for Haiku (#4199)

dev-lang/python/patches/python-2.7.16.patchset

@@ -1152,3 +1152,37 @@ index 6d4b3b3..8c42fb8 100644
 -- 
 2.21.0
 
+
+From 21502a9c6059d24d14924f518667f800764f5e42 Mon Sep 17 00:00:00 2001
+From: Philipp Wolfer <phil@parolu.io>
+Date: Mon, 23 Sep 2019 09:53:39 +0200
+Subject: [PATCH] webbrowser: Support for default browsers on Haiku
+
+---
+ Lib/webbrowser.py | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
+index 15eeb660e2..d73749d696 100755
+--- a/Lib/webbrowser.py
++++ b/Lib/webbrowser.py
+@@ -644,6 +644,16 @@ if sys.platform == 'darwin':
+     register("chrome", None, MacOSXOSAScript('chrome'), -1)
+     register("MacOSX", None, MacOSXOSAScript('default'), -1)
+ 
++#
++# Platform support for Haiku
++#
++
++if sys.platform[:5] == "haiku":
++    # First try to use the default configured browser
++    register("haiku-default", None, GenericBrowser("open"))
++    # Fall back to WebPositive as the standard browser of Haiku
++    register("webpositive", None, BackgroundBrowser("WebPositive"))
++
+ 
+ #
+ # Platform support for OS/2
+-- 
+2.23.0
+