added APACHE_BIN variable for the times when httpd is not in apache2 folder
added APACHE_BIN variable for the times when httpd is not in apache2 folder

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode