Replaced references php With vars

Done because differences between distros is quite big,
and this was the beter solution then using alot of if statements

List of changes:
* Replaced service names php"$phpver"-fpm with $phpFPMService
* Replaced PHPver in package list with phpPkgName
* Replaced full php config path with $phpMainConf
* Replaced php pool path with $phpPoolDir

installer.sh

@@ -576,7 +576,7 @@ done
 ##-------------##
 
 $PKGM update -y
-sed -i 's/PHPver/'$phpver'/g' /tmp/pkg.list
+sed -i 's/PHPprefix/'$phpPkgName'/g' /tmp/pkg.list
 cat /tmp/pkg.list | xargs $PKGI