cmd: fix building gen_vc.v and vcreate.v by `v build-tools`

cmd/tools/gen_vc.v

@@ -1,3 +1,5 @@
+module main
+
 // This tool regenerates V's bootstrap .c files
 // every time the V master branch is updated.
 
@@ -14,8 +16,6 @@
 // --dry-run   dont push anything to remote repo
 // --force     force update even if already up to date
 
-module main
-
 import os
 import log
 import flag
@@ -129,9 +129,8 @@ fn main() {
 	// webhook server mode
 	if flag_options.serve {
 		vweb.run<WebhookServer>(flag_options.port)
-	}
+	} else {
 		// cmd mode
-	else {
 		mut gen_vc := new_gen_vc(flag_options)
 		gen_vc.init()
 		gen_vc.generate()
@@ -164,6 +163,10 @@ pub fn (mut ws WebhookServer) init() {
 	//ws.init_once()
 }
 
+pub fn (mut ws WebhookServer) index() {
+	eprintln('WebhookServer.index() called')
+}
+
 // gen webhook
 pub fn (mut ws WebhookServer) genhook() {
 	// request data

cmd/tools/vbuild-tools.v

@@ -7,10 +7,7 @@ import v.util
 fn main() {
 	args := os.args
 	args_string := args[1..].join(' ')
-	// TODO: fix cmd/tools/gen_vc.v / vweb too
-	skips := [
-		'cmd/tools/gen_vc.v'
-	]
+	skips := []string{}
 	util.ensure_modules_for_all_tools_are_installed('-v' in args)
 	if testing.v_build_failing_skipped(args_string.all_before('build-tools'), 'cmd/tools', skips) {
 		exit(1)

cmd/tools/vcreate.v

@@ -1,3 +1,5 @@
+module main
+
 // Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
 // Use of this source code is governed by an MIT license
 // that can be found in the LICENSE file.
@@ -6,7 +8,6 @@
 // structure of the program in the _current_ directory, while `new`
 // makes the program structure in a _sub_ directory. Besides that, the
 // functionality is essentially the same.
-module main
 
 import os