compiler: support package test runtime aliases

cmd/wcc/parse.c

@@ -1571,7 +1571,11 @@ parsefile(Parser *p)
 				    p->pathmod ? p->pathmod : p->resetmod;
 				const char *dot = strrchr(active, '.');
 				const char *last = dot ? dot + 1 : active;
-				if (strcmp(name, last) != 0) {
+				int testsupport = p->testmodule != NULL
+				    && strcmp(p->testmodule, "__wwtest") == 0
+				    && strcmp(active, "__wwtest") == 0
+				    && strcmp(name, "test") == 0;
+				if (strcmp(name, last) != 0 && !testsupport) {
 					errorf(p->cur.pos,
 					    "package %s does not match import path %s",
 					    name, active);