fix warnings in Travis install and make failed install an error (no more || true)

.travis.yml

@@ -37,6 +37,11 @@ before_script:
   - composer update phpunit/phpunit
 
 script:
+  - php doc/rpm-build/post_install.php
+    --source_dir `pwd` --start_db '' --autostart_db '' --start_webserver '' --webserver_user ''
+  - mysql -uroot -e 'show tables' egroupware
+  # Ubuntu has problems with #!/usr/bin/env php -dapc.enable=1, it stalls forever
+  - php -dapc.enable_cli=1 doc/test-cli.php
   - ./doc/php_syntax_check.sh
   - ./doc/test-cli.php
 

doc/rpm-build/post_install.php

@@ -423,10 +423,12 @@ else
 	// fix egw_cache evtl. created by root, stoping webserver from accessing it
 	fix_perms();
 
+	if (!empty($config['start_webserver']))
+	{
 		// restart running Apache, to force APC to update changed sources and/or Apache configuration
 		$output = array();
 		run_cmd(build_cmd('start_webserver', 'status').' && '.build_cmd('start_webserver', 'restart'), $output, true);
-
+	}
 	exit($ret);
 }
 
@@ -577,7 +579,7 @@ function fix_perms()
 {
 	global $config;
 
-	if (file_exists('/tmp/egw_cache'))
+	if (file_exists('/tmp/egw_cache') && !empty($config['webserver_user']))
 	{
 		system('/bin/chown -R '.$config['webserver_user'].' /tmp/egw_cache');
 		system('/bin/chmod 700 /tmp/egw_cache');