os: add execute_or_exit(cmd), use it consistently instead of execute_or_panic(cmd)

cmd/tools/fast/fast.v

@@ -107,7 +107,7 @@ fn main() {
 }
 
 fn exec(s string) string {
-	e := os.execute_or_panic(s)
+	e := os.execute_or_exit(s)
 	return e.output.trim_right('\r\n')
 }
 
@@ -137,7 +137,7 @@ fn measure(cmd string, description string) int {
 }
 
 fn measure_steps(vdir string) (int, int, int, int, int) {
-	resp := os.execute_or_panic('$vdir/vprod $voptions -o v.c cmd/v')
+	resp := os.execute_or_exit('$vdir/vprod $voptions -o v.c cmd/v')
 
 	mut scan, mut parse, mut check, mut cgen, mut vlines := 0, 0, 0, 0, 0
 	lines := resp.output.split_into_lines()

cmd/tools/fast/fast_job.v

@@ -32,7 +32,7 @@ fn main() {
 			println('resp != 0, skipping')
 		} else {
 			os.chdir('website')
-			os.execute_or_panic('git checkout gh-pages')
+			os.execute_or_exit('git checkout gh-pages')
 			os.cp('../index.html', 'index.html') ?
 			os.system('git commit -am "update benchmark"')
 			os.system('git push origin gh-pages')

cmd/tools/oldv.v

@@ -165,7 +165,7 @@ fn main() {
 	scripting.cprintln('#     v commit hash: $shorter_hash | folder: $context.path_v')
 	if context.cmd_to_run.len > 0 {
 		scripting.cprintln_strong('#           command: ${context.cmd_to_run:-34s}')
-		cmdres := os.execute_or_panic(context.cmd_to_run)
+		cmdres := os.execute_or_exit(context.cmd_to_run)
 		if cmdres.exit_code != 0 {
 			scripting.cprintln_strong('#         exit code: ${cmdres.exit_code:-4d}')
 		}

cmd/tools/vcreate_test.v

@@ -4,7 +4,7 @@ const test_path = 'vcreate_test'
 
 fn init_and_check() ? {
 	vexe := @VEXE
-	os.execute_or_panic('$vexe init')
+	os.execute_or_exit('$vexe init')
 
 	assert os.read_file('vcreate_test.v') ? == [
 		'module main\n',
@@ -58,7 +58,7 @@ fn test_v_init_in_git_dir() ? {
 		os.rmdir_all(dir) or {}
 	}
 	os.chdir(dir)
-	os.execute_or_panic('git init .')
+	os.execute_or_exit('git init .')
 	init_and_check() ?
 }
 
@@ -73,7 +73,7 @@ fn test_v_init_no_overwrite_gitignore() ? {
 	os.chdir(dir)
 
 	vexe := @VEXE
-	os.execute_or_panic('$vexe init')
+	os.execute_or_exit('$vexe init')
 
 	assert os.read_file('.gitignore') ? == 'blah'
 }

cmd/tools/vself.v

@@ -32,7 +32,7 @@ fn main() {
 }
 
 fn compile(vroot string, cmd string) {
-	result := os.execute_or_panic(cmd)
+	result := os.execute_or_exit(cmd)
 	if result.exit_code != 0 {
 		eprintln('cannot compile to `$vroot`: \n$result.output')
 		exit(1)

cmd/tools/vup.v

@@ -135,7 +135,7 @@ fn (app App) git_command(command string) {
 	if git_result.exit_code < 0 {
 		app.get_git()
 		// Try it again with (maybe) git installed
-		os.execute_or_panic('git $command')
+		os.execute_or_exit('git $command')
 	}
 	if git_result.exit_code != 0 {
 		eprintln(git_result.output)