* Simple module compilation cache
* Fix base64 encoding bug
* Use warn! everywhere in cache system
* Remove unused import
* Temporary workaround for long path on Windows
* Remove unused import for non-windows builds
* Add command line argument to enable cache system + apply minor review feedback
wasmtime-execute is now wasmtime-jit. Move `JITCode` and the TargetIsa
into a new `Compiler` type. `InstancePlus` is no more, with trampoline
functionality now handled by `Compiler`.
The memmap crate doesn't make it straightforward to have part of the
region be writeable and part readonly. Since this is a fairly boutique
use case, and we don't need all that much code, just use the low-level
APIs directly.
Also, introduce a concept of "tunables" for adjusting the parameters of
the runtime.
The biggest change is the split from FunctionIndex to
DefinedFuncIndex to FuncIndex. Take better advantage of this by
converting several Vecs to PrimaryMaps.
Also, table_addr can now handle indices of the table index type,
so we don't need to explicitly uextend them anymore.