Issue #1962 - Update libtheora.

Removed some obsolete patches that were either backports from newer
 svn revisions, or a fix for older, non-applicable assemblers.
Update our own README to account for upstream's migration to git.
I didn't remove the bug 703135 patch as it's for MSVC it seems, and
 we still use MSVC for Windows.
Also deleted some unneeded upstream code deleted by Mozilla as well.

media/libtheora/update.sh

@@ -2,6 +2,9 @@
 #
 # Copies the needed files from a directory containing the original
 # libtheora source that we need for the Mozilla HTML5 media support.
+
+mkdir -p include/theora lib lib/arm lib/x86 lib/x86_vc
+
 sed \
  -e s/\#define\ OC_X86_ASM//g \
  -e s/\#define\ OC_X86_64_ASM//g \
@@ -19,14 +22,11 @@ sed \
 cp $1/LICENSE ./LICENSE
 cp $1/CHANGES ./CHANGES
 cp $1/COPYING ./COPYING
-cp $1/README ./README
+cp $1/README.md ./README.md
 cp $1/AUTHORS ./AUTHORS
-cp $1/lib/apiwrapper.c ./lib/
-cp $1/lib/apiwrapper.h ./lib/
 cp $1/lib/bitpack.c ./lib/
 cp $1/lib/bitpack.h ./lib/
 cp $1/lib/dct.h ./lib/
-cp $1/lib/decapiwrapper.c ./lib/
 cp $1/lib/decinfo.c ./lib/
 cp $1/lib/decint.h ./lib/
 cp $1/lib/decode.c ./lib/
@@ -76,11 +76,5 @@ cp $1/lib/x86_vc/x86int.h ./lib/x86_vc/
 cp $1/lib/x86_vc/x86state.c ./lib/x86_vc/
 cp $1/include/theora/theora.h ./include/theora/theora.h
 cp $1/include/theora/theoradec.h ./include/theora/theoradec.h
-cp $1/include/theora/theoraenc.h ./include/theora/theoraenc.h
 cp $1/include/theora/codec.h ./include/theora/codec.h
-patch -p3 < ./bug625773-r17780.patch
-patch -p3 < ./bug468275-r18219.patch
-patch -p3 < ./bug752139-r18031.patch
-patch -p3 < ./bug752668-r18268.patch
 patch -p3 < ./bug703135.patch
-patch -p3 < ./bug920992.patch