[Ohrrpgce] SVN: teeemcee/8211 Windows: finally fix and use winapi-based open_document() in open_url()

[subversion at HamsterRepublic.com]

teeemcee
2016-11-12 02:32:27 -0800 (Sat, 12 Nov 2016)
295
Windows: finally fix and use winapi-based open_document() in open_url()

This has a few small benefits:
- in theory it should report an error if no web browser could be
  launched (No error message for an invalid URL though)
- it works under wine
- it doesn't momentarily pop up a console window
---
U   wip/SConscript
U   wip/common.rbas
U   wip/os_windows.bas