Upgraded build pack utils.
Upgraded build pack utils.

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