windows: cleanup after bootstrapping with unicode entrypoint

make.bat

@@ -28,18 +28,14 @@ if not exist "%gccpath%" (
     goto:msvcstrap
 )
 
-gcc -std=c99 -DV_BOOTSTRAP -w -o v2.exe vc\v_win.c
+gcc -std=c99 -municode -w -o v2.exe vc\v_win.c
 if %ERRORLEVEL% NEQ 0 (
     echo gcc failed to compile - Create an issue at 'https://github.com/vlang'
     exit /b 1
 )
 
 echo Now using V to build V...
-rem TODO: remove when v.c is updated
-set VFLAGS=-cflags -DV_BOOTSTRAP -o v3.c v.v
-v2.exe
-gcc -std=c99 -DV_BOOTSTRAP -w -o v3.exe vc\v_win.c
-set VFLAGS=
+v2.exe -o v3.exe v.v
 v3.exe -o v.exe -prod v.v
 if %ERRORLEVEL% NEQ 0 (
     echo v.exe failed to compile itself - Create an issue at 'https://github.com/vlang'
@@ -81,11 +77,7 @@ if %ERRORLEVEL% NEQ 0 (
 )
 
 echo rebuild from source (twice, in case of C definitions changes)
-rem TODO: remove when v.c is updated
-set VFLAGS=-cc msvc -cflags /DV_BOOTSTRAP -o v3.c v.v
-v2.exe
-cl.exe /nologo /w /volatile:ms /Fo%ObjFile% /O2 /MD /D_VBOOTSTRAP v3.c user32.lib kernel32.lib advapi32.lib shell32.lib /link /NOLOGO /OUT:v3.exe /INCREMENTAL:NO
-set VFLAGS=
+v2.exe -cc msvc -o v3.exe v.v
 v3.exe -cc msvc -o v -prod v.v
 if %ERRORLEVEL% NEQ 0 (
     echo V failed to build itself with error %ERRORLEVEL%

vlib/compiler/main.v

@@ -559,9 +559,6 @@ pub fn (v mut V) generate_main() {
 pub fn (v mut V) gen_main_start(add_os_args bool) {
 	if v.os == .windows {
 		if 'glfw' in v.table.imports {
-			v.cgen.genln('#ifdef V_BOOTSTRAP')
-			v.cgen.genln('int main(int argc, char** argv) { ')
-			v.cgen.genln('#else')
 			// GUI application
 			v.cgen.genln('int WINAPI wWinMain(HINSTANCE instance, HINSTANCE prev_instance, LPWSTR cmd_line, int show_cmd) { ')
 			v.cgen.genln('    typedef LPWSTR*(WINAPI *cmd_line_to_argv)(LPCWSTR, int*);')
@@ -569,15 +566,9 @@ pub fn (v mut V) gen_main_start(add_os_args bool) {
 			v.cgen.genln('    cmd_line_to_argv CommandLineToArgvW = (cmd_line_to_argv)GetProcAddress(shell32_module, "CommandLineToArgvW");')
 			v.cgen.genln('    int argc;')
 			v.cgen.genln('    wchar_t** argv = CommandLineToArgvW(cmd_line, &argc);')
-			v.cgen.genln('    os__args = os__init_os_args_wide(argc, argv);')
-			v.cgen.genln('#endif')
 		} else {
-			v.cgen.genln('#ifdef V_BOOTSTRAP')
-			v.cgen.genln('int main(int argc, char** argv) { ')
-			v.cgen.genln('#else')
 			// Console application
 			v.cgen.genln('int wmain(int argc, wchar_t* argv[], wchar_t* envp[]) { ')
-			v.cgen.genln('#endif')
 		}
 	} else {
 		v.cgen.genln('int main(int argc, char** argv) { ')
@@ -585,11 +576,7 @@ pub fn (v mut V) gen_main_start(add_os_args bool) {
 	v.cgen.genln('  init();')
 	if add_os_args && 'os' in v.table.imports {
 		if v.os == .windows {
-			v.cgen.genln('#ifdef V_BOOTSTRAP')
-			v.cgen.genln('  os__args = os__init_os_args(argc, (byteptr*)argv);')
-			v.cgen.genln('#else')
 			v.cgen.genln('  os__args = os__init_os_args_wide(argc, argv);')
-			v.cgen.genln('#endif')
 		} else {
 			v.cgen.genln('  os__args = os__init_os_args(argc, (byteptr*)argv);')
 		}

vlib/os/os_windows.v

@@ -74,15 +74,7 @@ mut:
 	bInheritHandle bool
 }
 
-fn init_os_args(argc int, argv &byteptr) []string {	
-	mut args := []string
-	for i := 0; i < argc; i++ {
-		args << string(argv[i])
-	}
-	return args
-}
-
-fn init_os_args_wide(argc int, argv &byteptr) []string {	
+fn init_os_args_wide(argc int, argv &byteptr) []string {
 	mut args := []string
 	for i := 0; i < argc; i++ {
 		args << string_from_wide(&u16(argv[i]))