Use new runtime stores in Wasmer 3 examples

stores.diff

diff --git a/examples/compiler_singlepass.rs b/examples/compiler_singlepass.rs
index 01fb181b12..5d6d90152f 100644
--- a/examples/compiler_singlepass.rs
+++ b/examples/compiler_singlepass.rs
@@ -41,6 +41,10 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Create an empty import object.
     let import_object = imports! {};
 
+    // Create a new store for this instance
+    let compiler = Singlepass::default();
+    let mut store = Store::new(compiler);
+
     println!("Instantiating module...");
     // Let's instantiate the Wasm module.
     let instance = Instance::new(&mut store, &module, &import_object)?;
diff --git a/examples/exports_memory.rs b/examples/exports_memory.rs
index 8cb29e2e6d..6a1ebaf802 100644
--- a/examples/exports_memory.rs
+++ b/examples/exports_memory.rs
@@ -45,6 +45,9 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Create an empty import object.
     let import_object = imports! {};
 
+    // Create a new store for this instance
+    let mut store = Store::new(Cranelift::default());
+
     println!("Instantiating module...");
     // Let's instantiate the Wasm module.
     let instance = Instance::new(&mut store, &module, &import_object)?;
diff --git a/examples/memory.rs b/examples/memory.rs
index 52528e3dcb..f278d3b698 100644
--- a/examples/memory.rs
+++ b/examples/memory.rs
@@ -65,6 +65,9 @@ fn main() -> anyhow::Result<()> {
     // Create an empty import object.
     let import_object = imports! {};
 
+    // Create a new store for this instance
+    let mut store = Store::new(Cranelift::default());
+
     println!("Instantiating module...");
     // Let's instantiate the Wasm module.
     let instance = Instance::new(&mut store, &module, &import_object)?;
diff --git a/examples/metering.rs b/examples/metering.rs
index e5d8c70d74..8fc4638b2a 100644
--- a/examples/metering.rs
+++ b/examples/metering.rs
@@ -78,6 +78,9 @@ fn main() -> anyhow::Result<()> {
     // Create an empty import object.
     let import_object = imports! {};
 
+    // Create a new store for this instance
+    let mut store = Store::new(Cranelift::default());
+
     println!("Instantiating module...");
     // Let's instantiate the Wasm module.
     let instance = Instance::new(&mut store, &module, &import_object)?;
diff --git a/examples/tunables_limit_memory.rs b/examples/tunables_limit_memory.rs
index da2c7a4ece..2cda1add50 100644
--- a/examples/tunables_limit_memory.rs
+++ b/examples/tunables_limit_memory.rs
@@ -154,6 +154,14 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("Instantiating module...");
     let import_object = imports! {};
 
+    // Create a new store for this instance
+    let compiler = Cranelift::default();
+    let base = BaseTunables::for_target(&Target::default());
+    let tunables = LimitingTunables::new(base, Pages(24));
+    let mut engine: Engine = compiler.into();
+    engine.set_tunables(tunables);
+    let mut store = Store::new(engine);
+
     // Now at this point, our custom tunables are used
     let instance = Instance::new(&mut store, &module, &import_object)?;