add php/_waitfile.sh script

Waits for till a file exists and fails after a certain timeout
Use apache runner as preferred php runner if apache is installed
Print dots for each waitfile tick
Fix run_apache.sh by running apache in background

This avoids errors with the stupid SIGWINCH issue
Fixes #294
Silence "anywait" function in run_apache.sh
Merge pull request #296 from FriendCode/fix/apache_runner

Fix/apache runner