Upgraded build pack utils.
Upgraded build pack utils.

hpcloud/php-buildpack,apawar2/php-buildpack,arjankroontolsma/post2,kei-yamazaki/cf-php-build-pack,svrc-pivotal/php-buildpack,hairmare/php-buildpack,LeonidLe/php-buildpack,skysports-digitalmedia/php-buildpack,nsharma283/php-new,hjooyang/php-buildpack-3.2.2-,hjooyang/php-buildpack-3.2.2-,svennam92/php-buildpack,aronreid/cf-php-buildpack,ochamber/cf-php-build-pack,skysports-digitalmedia/php-buildpack,nkatre/php-buildpack,aronreid/cf-php-buildpack,cloudfoundry/php-buildpack,cloudn/cf-php-build-pack,arjankroontolsma/post2,ArthurHlt/php-buildpack,svrc-pivotal/php-buildpack,ashish17das/cf-php-build,lloydbadger/test,apawar2/php-buildpack,arjankroontolsma/post2,Orange-OpenSource/cf-php-build-pack,nkatre/php-buildpack,imaiworks/cf-php-build-pack-cakephp,nsharma283/php-buildpack,skeeso/php-buildpack,lloydbadger/test,aronreid/cf-php-buildpack,ochamber/cf-php-build-pack,ArthurHlt/php-buildpack,isys01/cf-php-build-pack-cakephp,kumauta/cf-php-build-pack,nkatre/php-buildpack,cloudn/cf-php-build-pack,hpcloud/php-buildpack,ArthurHlt/php-buildpack,aronreid/cf-php-buildpack,nsharma283/php-buildpack,ToyamaTetsuji/test,kei-yamazaki/cf-php-build-pack,cloudfoundry/php-buildpack,hairmare/php-buildpack,liuziyan/cf-php-build-pack,hjooyang/php-buildpack,ochamber/cf-php-build-pack,nsharma283/php-new,kei-yamazaki/cf-php-build-pack,nsharma283/php-new,thesrinivas/php-buildpack,ArthurHlt/php-buildpack,ToyamaTetsuji/test,UNINETT/php-buildpack,cloudfoundry/php-buildpack,chregu/cf-php-varnish-buildpack,tgemal00/php-buildpack,zhangyanfa/yanfaz-php-buildpack,nkatre/php-buildpack,LeonidLe/php-buildpack,svrc-pivotal/php-buildpack,cf-identity/php-buildpack,ArthurHlt/php-buildpack,Orange-OpenSource/cf-php-build-pack,zizhongwei/php-buildpack-master,ashish17das/cf-php-build,hpcloud/php-buildpack,jsloyer/php-buildpack,zizhongwei/php-buildpack-master,UNINETT/php-buildpack,imovedev/cf-php-build-pack-def,arjankroontolsma/post2,lloydbadger/test,ochamber/cf-php-build-pack,hjooyang/php-buildpack-3.2.2-,imaiworks/cf-php-build-pack-cakephp,cf-identity/php-buildpack,skeeso/php-buildpack,thesrinivas/php-buildpack,hjooyang/php-buildpack,arjankroontolsma/post2,isys01/cf-php-build-pack-cakephp,tgemal00/php-buildpack,skysports-digitalmedia/php-buildpack,cloudn/cf-php-build-pack,Orange-OpenSource/cf-php-build-pack,svennam92/php-buildpack,UNINETT/php-buildpack,hairmare/php-buildpack,tgemal00/php-buildpack,nsharma283/php-buildpack,apawar2/php-buildpack,mc500/php-buildpack,skeeso/php-buildpack,tgemal00/php-buildpack,nsharma283/PCF-php-buildpack,nsharma283/php-buildpack,kei-yamazaki/cf-php-build-pack,skeeso/php-buildpack,imovedev/cf-php-build-pack-cakephp2,imovedev/cf-php-build-pack-cakephp,imovedev/cf-php-build-pack-cakephp,aronreid/cf-php-buildpack,skeeso/php-buildpack,mc500/php-buildpack,zhangyanfa/yanfaz-php-buildpack,ochamber/cf-php-build-pack,zizhongwei/php-buildpack-master,mc500/php-buildpack,aronreid/cf-php-buildpack,LeonidLe/php-buildpack,nsharma283/php-new,cloudfoundry/php-buildpack,hairmare/php-buildpack,hjooyang/php-buildpack-3.2.2-,imovedev/cf-php-build-pack-def,cloudn/cf-php-build-pack,chregu/cf-php-varnish-buildpack,hjooyang/php-buildpack,kumauta/cf-php-build-pack,nsharma283/php-new,hairmare/php-buildpack,LeonidLe/php-buildpack,jsloyer/php-buildpack,nsharma283/php-buildpack,skysports-digitalmedia/php-buildpack,hairmare/php-buildpack,cloudn/cf-php-build-pack,cf-identity/php-buildpack,hpcloud/php-buildpack,zizhongwei/php-buildpack-master,zhangyanfa/yanfaz-php-buildpack,zizhongwei/php-buildpack-master,thesrinivas/php-buildpack,chregu/cf-php-varnish-buildpack,mc500/php-buildpack,kei-yamazaki/cf-php-build-pack,UNINETT/php-buildpack,lloydbadger/test,jsloyer/php-buildpack,imovedev/cf-php-build-pack-def,tgemal00/php-buildpack,cloudfoundry/php-buildpack,nkatre/php-buildpack,kumauta/cf-php-build-pack,LeonidLe/php-buildpack,cf-identity/php-buildpack,chregu/cf-php-varnish-buildpack,lloydbadger/test,zhangyanfa/yanfaz-php-buildpack,imovedev/cf-php-build-pack-cakephp2,chregu/cf-php-varnish-buildpack,nkatre/php-buildpack,hjooyang/php-buildpack,imovedev/cf-php-build-pack-cakephp2,liuziyan/cf-php-build-pack,mc500/php-buildpack,hjooyang/php-buildpack-3.2.2-,svrc-pivotal/php-buildpack,thesrinivas/php-buildpack,UNINETT/php-buildpack,zhangyanfa/yanfaz-php-buildpack,mc500/php-buildpack,nsharma283/php-buildpack,lloydbadger/test,cf-identity/php-buildpack,ashish17das/cf-php-build,jan-randis/php-db2-mysql-buildpack,kumauta/cf-php-build-pack,apawar2/php-buildpack,thesrinivas/php-buildpack,ashish17das/cf-php-build,jsloyer/php-buildpack,UNINETT/php-buildpack,imaiworks/cf-php-build-pack-cakephp,hjooyang/php-buildpack-3.2.2-,jan-randis/php-db2-mysql-buildpack,hpcloud/php-buildpack,jan-randis/php-db2-mysql-buildpack,ochamber/cf-php-build-pack,skysports-digitalmedia/php-buildpack,cloudfoundry/php-buildpack,kumauta/cf-php-build-pack,cloudn/cf-php-build-pack,jsloyer/php-buildpack,jan-randis/php-db2-mysql-buildpack,ashish17das/cf-php-build,imovedev/cf-php-build-pack-cakephp,nsharma283/php-new,LeonidLe/php-buildpack,jsloyer/php-buildpack,kei-yamazaki/cf-php-build-pack,nsharma283/PCF-php-buildpack,ToyamaTetsuji/test,svrc-pivotal/php-buildpack,nsharma283/PCF-php-buildpack,nsharma283/PCF-php-buildpack,arjankroontolsma/post2,svennam92/php-buildpack,nsharma283/PCF-php-buildpack,chregu/cf-php-varnish-buildpack,cf-identity/php-buildpack,isys01/cf-php-build-pack-cakephp,tgemal00/php-buildpack,zizhongwei/php-buildpack-master,zhangyanfa/yanfaz-php-buildpack,ArthurHlt/php-buildpack,hjooyang/php-buildpack,svennam92/php-buildpack,nsharma283/PCF-php-buildpack,jan-randis/php-db2-mysql-buildpack,apawar2/php-buildpack,liuziyan/cf-php-build-pack,svennam92/php-buildpack,svennam92/php-buildpack,thesrinivas/php-buildpack,skeeso/php-buildpack,apawar2/php-buildpack,cloudfoundry/php-buildpack,hairmare/php-buildpack,kumauta/cf-php-build-pack,jan-randis/php-db2-mysql-buildpack,svrc-pivotal/php-buildpack,ashish17das/cf-php-build,skysports-digitalmedia/php-buildpack,cf-identity/php-buildpack,hpcloud/php-buildpack,hjooyang/php-buildpack