Relative imports!

This is a breaking change because existing imports in user Wren code
that assume the path is relative to the entrypoint file will now likely
fail.

Also, stack trace output and host API calls that take a module string
now need the resolved module string, not the short name that appears in
the import.

test/api/call.c

@@ -6,7 +6,7 @@
 void callRunTests(WrenVM* vm)
 {
   wrenEnsureSlots(vm, 1);
-  wrenGetVariable(vm, "main", "Call", 0);
+  wrenGetVariable(vm, "test/api/call", "Call", 0);
   WrenHandle* callClass = wrenGetSlotHandle(vm, 0);
   
   WrenHandle* noParams = wrenMakeCallHandle(vm, "noParams");

test/api/get_variable.c

@@ -4,23 +4,23 @@
 
 static void beforeDefined(WrenVM* vm)
 {
-  wrenGetVariable(vm, "main", "A", 0);
+  wrenGetVariable(vm, "test/api/get_variable", "A", 0);
 }
 
 static void afterDefined(WrenVM* vm)
 {
-  wrenGetVariable(vm, "main", "A", 0);
+  wrenGetVariable(vm, "test/api/get_variable", "A", 0);
 }
 
 static void afterAssigned(WrenVM* vm)
 {
-  wrenGetVariable(vm, "main", "A", 0);
+  wrenGetVariable(vm, "test/api/get_variable", "A", 0);
 }
 
 static void otherSlot(WrenVM* vm)
 {
   wrenEnsureSlots(vm, 3);
-  wrenGetVariable(vm, "main", "B", 2);
+  wrenGetVariable(vm, "test/api/get_variable", "B", 2);
   
   // Move it into return position.
   const char* string = wrenGetSlotString(vm, 2);
@@ -29,7 +29,7 @@ static void otherSlot(WrenVM* vm)
 
 static void otherModule(WrenVM* vm)
 {
-  wrenGetVariable(vm, "get_variable_module", "Variable", 0);
+  wrenGetVariable(vm, "test/api/get_variable_module", "Variable", 0);
 }
 
 WrenForeignMethodFn getVariableBindMethod(const char* signature)

test/api/get_variable.wren

@@ -1,4 +1,4 @@
-import "get_variable_module"
+import "./get_variable_module"
 
 class GetVariable {
   foreign static beforeDefined()

test/api/main.c

@@ -24,8 +24,8 @@ const char* testName;
 static WrenForeignMethodFn bindForeignMethod(
     WrenVM* vm, const char* module, const char* className,
     bool isStatic, const char* signature)
-{  
-  if (strcmp(module, "main") != 0) return NULL;
+{
+  if (strncmp(module, "test/", 5) != 0) return NULL;
 
   // For convenience, concatenate all of the method qualifiers into a single
   // signature string.
@@ -78,7 +78,7 @@ static WrenForeignClassMethods bindForeignClass(
     WrenVM* vm, const char* module, const char* className)
 {
   WrenForeignClassMethods methods = { NULL, NULL };
-  if (strcmp(module, "main") != 0) return methods;
+  if (strncmp(module, "test/", 5) != 0) return methods;
 
   foreignClassBindClass(className, &methods);
   if (methods.allocate != NULL) return methods;

test/api/reset_stack_after_call_abort.c

@@ -6,7 +6,7 @@
 void resetStackAfterCallAbortRunTests(WrenVM* vm)
 {
   wrenEnsureSlots(vm, 1);
-  wrenGetVariable(vm, "main", "Test", 0);
+  wrenGetVariable(vm, "test/api/reset_stack_after_call_abort", "Test", 0);
   WrenHandle* testClass = wrenGetSlotHandle(vm, 0);
   
   WrenHandle* abortFiber = wrenMakeCallHandle(vm, "abortFiber()");
@@ -25,4 +25,4 @@ void resetStackAfterCallAbortRunTests(WrenVM* vm)
   wrenReleaseHandle(vm, testClass);
   wrenReleaseHandle(vm, abortFiber);
   wrenReleaseHandle(vm, afterConstruct);
-}
+}

test/api/reset_stack_after_foreign_construct.c

@@ -22,7 +22,7 @@ void resetStackAfterForeignConstructBindClass(
 void resetStackAfterForeignConstructRunTests(WrenVM* vm)
 {
   wrenEnsureSlots(vm, 1);
-  wrenGetVariable(vm, "main", "Test", 0);
+  wrenGetVariable(vm, "test/api/reset_stack_after_foreign_construct", "Test", 0);
   WrenHandle* testClass = wrenGetSlotHandle(vm, 0);
   
   WrenHandle* callConstruct = wrenMakeCallHandle(vm, "callConstruct()");
@@ -41,4 +41,4 @@ void resetStackAfterForeignConstructRunTests(WrenVM* vm)
   wrenReleaseHandle(vm, testClass);
   wrenReleaseHandle(vm, callConstruct);
   wrenReleaseHandle(vm, afterConstruct);
-}
+}