wxWidgets: create a new port to hold common files

[mojca (Mojca Miklavec)]

I'm attaching a patch that fetches the following files from the latest release:

share/aclocal/wxwin.m4
share/bakefile/presets/wx.bkl
share/bakefile/presets/wx_presets.py
share/bakefile/presets/wx_unix.bkl
share/bakefile/presets/wx_win32.bkl
share/bakefile/presets/wx_xrc.bkl

and installs them straight to ${prefix}, avoiding the need for port select to handle those six files. I don't know what the last five are, but the first one:

• certainly works with any wxWidgets version
• it is often needed (some software packages need it for running autoconf if they don't ship a local copy)
• causes problems with autoconf due to a bug in port select (#47755)

The step that is still missing is some cleanup of leftovers in preactivation step.

I would like to request some testing and feedback before committing the files.

[mojca (Mojca Miklavec)]

move common files to a separate port

[mojca (Mojca Miklavec)]

Other changes related to wxWidgets: #50701 (that might make sense to commit immediately one after the other).

[mojca (Mojca Miklavec)]

Committed in r146366.