win32 manifest files: don't force x86 arch

we make binaries for other arch
having the field set to x86 doesn't prevent binary to run
it doesn't prevent loading 64bits DLLs either, except when it does
(qt4 plugin for example)

extras/package/win32/libvlc.dll.manifest

@@ -2,7 +2,7 @@
 <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
 	<assemblyIdentity
 		version="1.0.0.0"
-		processorArchitecture="x86"
+		processorArchitecture="*"
 		name="libvlc.dll"
 		type="win32"
 	/>

extras/package/win32/vlc.exe.manifest

@@ -2,7 +2,7 @@
 <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
 	<assemblyIdentity
 		version="1.0.0.0"
-		processorArchitecture="X86"
+		processorArchitecture="*"
 		name="VideoLAN.VLC"
 		type="win32"
 	/>
@@ -20,7 +20,7 @@
 				type="win32"
 				name="Microsoft.Windows.Common-Controls"
 				version="6.0.0.0"
-				processorArchitecture="X86"
+				processorArchitecture="*"
 				publicKeyToken="6595b64144ccf1df"
 				language="*"
 			/>