[Rust] updated how Cargo.toml package name is cleaned

Author: Michael Ward

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/rust/RustGenerator.java

@@ -111,7 +111,7 @@ public void generate() throws IOException
         // create Cargo.toml
         try (Writer writer = outputManager.createCargoToml())
         {
-            final String packageName = toLowerSnakeCase(ir.packageName()).replaceAll("[.-]", "_");
+            final String packageName = toLowerSnakeCase(ir.packageName().replaceAll("[\\s.-]", "_"));
             final String namespace;
             if (ir.namespaceName() == null || ir.namespaceName().equalsIgnoreCase(packageName))
             {

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/rust/RustOutputManager.java

@@ -60,7 +60,7 @@ public RustOutputManager(final String baseDirName, final String packageName)
         Verify.notNull(packageName, "packageName");
 
         String dirName = baseDirName.endsWith("" + separatorChar) ? baseDirName : baseDirName + separatorChar;
-        dirName += packageName.replaceAll("\\.", "_").toLowerCase() + separatorChar;
+        dirName += packageName.replaceAll("[\\s.-]", "_").toLowerCase() + separatorChar;
         final String libDirName = dirName;
         rootDir = new File(libDirName);