os: mkdir() error handling

vlib/compiler/cc.v

@@ -108,7 +108,7 @@ fn (v mut V) cc() {
 			}
 			if v.pref.ccompiler == 'cc' && os.file_exists(tcc_path) {
 				// TODO tcc bug, needs an empty libtcc1.a fila
-				//os.mkdir('/var/tmp/tcc/lib/tcc/')
+				//os.mkdir('/var/tmp/tcc/lib/tcc/') or { panic(err) }
 				//os.create('/var/tmp/tcc/lib/tcc/libtcc1.a')
 				v.pref.ccompiler = tcc_path
 				a << '-m64'

vlib/compiler/main.v

@@ -843,8 +843,8 @@ pub fn (v &V) log(s string) {
 pub fn new_v(args[]string) &V {
 	// Create modules dirs if they are missing
 	if !os.dir_exists(v_modules_path) {
-		os.mkdir(v_modules_path)
-		os.mkdir('$v_modules_path${os.path_separator}cache')
+		os.mkdir(v_modules_path) or { panic(err) }
+		os.mkdir('$v_modules_path${os.path_separator}cache') or { panic(err) }
 	}
 	
 	// Location of all vlib files
@@ -903,7 +903,7 @@ pub fn new_v(args[]string) &V {
 		// Cross compiling? Use separate dirs for each os
 		/*
 		if target_os != os.user_os() {
-			os.mkdir('$TmpPath/vlib/$target_os')
+			os.mkdir('$TmpPath/vlib/$target_os') or { panic(err) }
 			out_name = '$TmpPath/vlib/$target_os/${base}.o'
 			println('target_os=$target_os user_os=${os.user_os()}')
 			println('!Cross compiling $out_name')
@@ -939,7 +939,7 @@ pub fn new_v(args[]string) &V {
 		d := out_name.all_before_last(os.path_separator)
 		if !os.dir_exists(d) {
 			println('creating a new directory "$d"')
-			os.mkdir(d)
+			os.mkdir(d) or { panic(err) }
 		}	
 	}	
 	mut _os := OS.mac

vlib/compiler/module_header.v

@@ -36,7 +36,7 @@ fn generate_vh(mod string) {
 	pdir := dir.all_before_last(os.path_separator)
 	if !os.dir_exists(pdir) {
 		os.mkdir_all(pdir)
-		// os.mkdir(os.realpath(dir))
+		// os.mkdir(os.realpath(dir)) or { panic(err) }
 	}
 	out := os.create(path) or { panic(err) }
 	mod_path := mod.replace("\\", "/")
@@ -169,5 +169,3 @@ fn (g mut VhGen) generate_type() {
 	//g.i = old
 	//g.i--
 }
-
-

vlib/compiler/vtmp.v

@@ -10,7 +10,7 @@ import filepath
 pub fn get_vtmp_folder() string {
 	vtmp := filepath.join(os.tmpdir(),'v')
 	if !os.dir_exists( vtmp ) {
-		os.mkdir(vtmp)
+		os.mkdir(vtmp) or { panic(err) }
 	}
 	return vtmp
 }