Updated build.sh to support the latest source

[kenchung]

Thanks for putting all this together. I am having hard time compiling the latest source from http://git.chromium.org/webm/libwebp.git.

Can you by any chance update the script to work with the latest source code? I am getting the following error at the end.

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/lipo: /webp/tmp/iPhoneSimulator-6.1-i386/lib/libwebp.a and /webp/tmp/iPhoneOS-6.1-armv7/lib/libwebp.a have the same architectures (i386) and can't be in the same fat output file

[taberrr]

I'm getting the error:

sh: autogen.sh: No such file or directory

after I try running build.sh - also, google has changed the naming convention of their downloads, libwebp-0.3.0-mac-10.8.tar.gz and libwebp-0.3.0-linux-x86-32.tar.gz, etc.

[carsonmcdonald]

I'll try to look into both of these issues in the next couple days.

[taberrr]

Ah ha, it looks like they even already have a .a library in the -mac download.

[kenchung]

@carsonmcdonald here's an update. I was able to successfully compile from the official libwebp-0.3.1.tar.gz without any modification just not from git. Also it was not compiling under Mavericks but since it's not even out.. I think it could wait.