Fix max module name to 31 chars and the entire module path to 63 characters.

test/test_suite/module/module_long_name.c3

@@ -0,0 +1,17 @@
+module a1234567890123456789012345678901; // #error: The module name is too long
+
+fn void main()
+{
+}
+
+module a123456789012345678901234567890::ifjeijfoiejfoejifojeiofjioe::ifjeijiefjiefj;
+
+fn void foo()
+{
+}
+
+module a123456789012345678901234567890::ifjeijfoiejfoejieiofjioe::ifjeijiji::efj::fefeif::ofjiwjfe; // #error: The full module path is too long
+
+fn void foo()
+{
+}

test/test_suite/module/module_short.c3t

@@ -0,0 +1,10 @@
+module a;
+import b, std;
+
+fn void main()
+{
+	io::printn(b::test());
+}
+
+module b;
+fn int test() => 37;