refactoring changes from sequpgrade (endReturn, ...) and some modernizations

seqs/rspamd.sh

@@ -259,10 +259,10 @@ step_60() {
 
   exe ./setVersion.sh "${version}" # check for latest tag
   confirm -f -y -n "remove arm64 from ENABLE_LUAJIT ifneq"
-  exe editor debian/rules 
+  exe editor debian/rules
   confirm -f -y -n "enable WANT_SYSTEMD_UNITS, disable ENABLE_LUAJIT"
   exe editor CMakeLists.txt
-  
+
   exe mkdir -p "${buildDir}"
   exe cd "${buildDir}"
   exe cmake "${cloneDir}" -DENABLE_HYPERSCAN=OFF
@@ -320,7 +320,7 @@ step_65() {
   info "Building version ${version} in ${buildDir}"
   exe mkdir -p "${buildHome}"
   exe cd "${buildHome}"
-  exe git clone --recursive "${toolGit}" 
+  exe git clone --recursive "${toolGit}"
   info "Checkout version ${version}"
   exe cd "${cloneDir}"
   exe git checkout tags/${version} # check for latest tag