Fix frameskip in Windows UI

The current values of g_Config.iFrameSkip are strange. 1 means auto, 2 means frameskip = 1, 3 means frameskip = 2...

In the current Windows UI, frameskip = 1 was absent.
If the user chooses 2 in Windows menu, the frameskip  will be 1, and the inner UI will show 1.
If the user chooses 2 in the inner UI, the frameskip will be correct, and the Windows menu will show 3.

I also fixed resource.h.
I changed the encoding to ANSI, because the other .cpp/.h are also ANSI. The file has no non-ANSI character.
Now git and github should show the changes as a source file instead of handling it as binary file.
My suggestion is to keep this enconding and fix it whenever someone changes the enconding.

I commited a test in resource.h.
https://github.com/papel/ppsspp/commit/0d5994c4df40f715c22ad91e38fc7a0e484d3ed0

I do not know how to fix ppsspp.rc, it contains the character 'å', which is not ANSI. If I change the file to ANSI, it will work here, because my Windows has Western European language. I do not know how it will be with other languages.