fixed a typo in a function call
Fixes issues with autoconf

In particular, it removes any deprecated functionality
wxWidgets only documents their deprecated m4 macros and gives a poor example
Also to note in regard to wxWidgets, I removed any unneeded libraries from the linker line.

Any warning messages provided by autoconf has been supressed in the most appropriate manner possible.
Merge pull request #12 from computerquip/autotools-fix

Fixes issues with autoconf
Fixed double files, causes issues on Windows
Merge pull request #13 from computerquip/autotools-fix

Fixed double files, causes issues on Windows
Minor change that fixes error message and sets a wxVersion variable
Merge pull request #14 from computerquip/autotools-fix

Minor change that fixes error message and sets a wxVersion variable
implement scene adding callbacks, make a few API tweaks
renamed some window files to ensure they sort a bit better
fixed project file settings for those renamed files and fixed a typo
Add ability to use two desktop audio devices at once in basic UI
added a SceneRemoved handler
added a name entry dialog to the form files
update callbacks for name dialog
added name dialog code, moved 'using namespace std;' out of headers and into source files
change obs_scene_destroy to obs_scene_release, add ability to add scenes, fix name dialog sizing
make sure another source by the same name doesn't already exist when choosing a name for that scene
make OK button the default button for when using the 'enter name' dialog
add static linking options for ffmpeg and wxwidgets to cmake
add newline to non-windows log output