If both an extension and the container app (or multiple extensions) reference
the same binding assembly for a framework, then we'd error out with an
internal error when trying to copy the framework from both locations to the
container app.
So instead detect when we're trying to copy multiple identical (by comparing
the on-disk contents) frameworks, and only copy one of them.
We'll still show an error if the frameworks are different, but now a nice
MT1035 error with a proper error description instead of an internal error.
https://bugzilla.xamarin.com/show_bug.cgi?id=56635
This fixes a file sharing exception:
> MTOUCH: error MT1009: Could not copy the assembly '[...]/msbuild/tests/MyActionExtension/bin/iPhone/Debug/MyActionExtension.dll' to '[...]/msbuild/tests/MyTabbedApplication/obj/iPhone/Debug/mtouch-cache/32/Link/MyActionExtension.dll': Sharing violation on path [...]/msbuild/tests/MyActionExtension/bin/iPhone/Debug/MyActionExtension.pdb
Change cache invalidation so that if any app extension's cache is invalid,
then invalidate the cache for the container app and all other app extensions.
This is the safest option when we're sharing code.
Don't use the global command line arguments to determine input, because that's
not the input we use for app extensions anymore.
Instead explicitly pass the input arguments when creating the cache.
Since neither mtouch nor mmmp is mkbundled anymore, the installed binary is in
fact a shell script.
This means that it's quite useless to check if the shell script has been
modified; instead check if the executing assembly has been modified (which
works now that we're not mkbundled anymore).
So that there can be multiple caches in the same process (which we'll have
once mtouch can compile extensions and the container app in the same process).
Timothy Risi
Rolf Bjarne Kvinge