Fix the Travis build
Fix the Travis build

Summary:
`ia32-libs` cannot be installed on Travis machines because of a
broken dependency. Instead explicitly use the libraries we need.
Also limit Ant's and Buck's memory usage to avoid the OOM killer.

Test Plan:
Send a pull request, check the Travis build.

k21/buck,robbertvanginkel/buck,marcinkwiatkowski/buck,illicitonion/buck,sdwilsh/buck,bocon13/buck,brettwooldridge/buck,janicduplessis/buck,marcinkwiatkowski/buck,grumpyjames/buck,clonetwin26/buck,JoelMarcey/buck,ilya-klyuchnikov/buck,bocon13/buck,marcinkwiatkowski/buck,justinmuller/buck,illicitonion/buck,davido/buck,justinmuller/buck,ilya-klyuchnikov/buck,shs96c/buck,darkforestzero/buck,darkforestzero/buck,romanoid/buck,shybovycha/buck,ilya-klyuchnikov/buck,Addepar/buck,shs96c/buck,OkBuilds/buck,ilya-klyuchnikov/buck,SeleniumHQ/buck,shybovycha/buck,marcinkwiatkowski/buck,janicduplessis/buck,OkBuilds/buck,kageiit/buck,kageiit/buck,shs96c/buck,daedric/buck,brettwooldridge/buck,ilya-klyuchnikov/buck,k21/buck,davido/buck,LegNeato/buck,zhan-xiong/buck,illicitonion/buck,davido/buck,OkBuilds/buck,robbertvanginkel/buck,clonetwin26/buck,daedric/buck,daedric/buck,grumpyjames/buck,shybovycha/buck,k21/buck,illicitonion/buck,OkBuilds/buck,raviagarwal7/buck,LegNeato/buck,bocon13/buck,vschs007/buck,OkBuilds/buck,nguyentruongtho/buck,justinmuller/buck,dsyang/buck,raviagarwal7/buck,grumpyjames/buck,romanoid/buck,dsyang/buck,davido/buck,grumpyjames/buck,LegNeato/buck,zhan-xiong/buck,janicduplessis/buck,clonetwin26/buck,justinmuller/buck,nguyentruongtho/buck,vschs007/buck,Addepar/buck,romanoid/buck,clonetwin26/buck,LegNeato/buck,raviagarwal7/buck,sdwilsh/buck,bocon13/buck,nguyentruongtho/buck,k21/buck,dsyang/buck,Addepar/buck,raviagarwal7/buck,vschs007/buck,illicitonion/buck,justinmuller/buck,daedric/buck,grumpyjames/buck,romanoid/buck,romanoid/buck,vschs007/buck,vschs007/buck,Addepar/buck,daedric/buck,nguyentruongtho/buck,sdwilsh/buck,ilya-klyuchnikov/buck,darkforestzero/buck,shs96c/buck,Dominator008/buck,SeleniumHQ/buck,justinmuller/buck,rmaz/buck,SeleniumHQ/buck,darkforestzero/buck,romanoid/buck,grumpyjames/buck,zhan-xiong/buck,Addepar/buck,shs96c/buck,SeleniumHQ/buck,rmaz/buck,rmaz/buck,OkBuilds/buck,Addepar/buck,JoelMarcey/buck,JoelMarcey/buck,davido/buck,OkBuilds/buck,grumpyjames/buck,rmaz/buck,brettwooldridge/buck,dsyang/buck,zhan-xiong/buck,clonetwin26/buck,ilya-klyuchnikov/buck,raviagarwal7/buck,darkforestzero/buck,zpao/buck,raviagarwal7/buck,kageiit/buck,OkBuilds/buck,bocon13/buck,sdwilsh/buck,darkforestzero/buck,k21/buck,LegNeato/buck,dsyang/buck,Addepar/buck,JoelMarcey/buck,Addepar/buck,raviagarwal7/buck,Dominator008/buck,JoelMarcey/buck,grumpyjames/buck,vschs007/buck,clonetwin26/buck,shs96c/buck,facebook/buck,JoelMarcey/buck,vschs007/buck,darkforestzero/buck,sdwilsh/buck,vschs007/buck,darkforestzero/buck,k21/buck,vschs007/buck,clonetwin26/buck,justinmuller/buck,Addepar/buck,bocon13/buck,Dominator008/buck,janicduplessis/buck,brettwooldridge/buck,romanoid/buck,janicduplessis/buck,marcinkwiatkowski/buck,marcinkwiatkowski/buck,OkBuilds/buck,robbertvanginkel/buck,shybovycha/buck,sdwilsh/buck,daedric/buck,robbertvanginkel/buck,zhan-xiong/buck,LegNeato/buck,rmaz/buck,SeleniumHQ/buck,marcinkwiatkowski/buck,illicitonion/buck,marcinkwiatkowski/buck,JoelMarcey/buck,davido/buck,grumpyjames/buck,robbertvanginkel/buck,illicitonion/buck,shybovycha/buck,janicduplessis/buck,marcinkwiatkowski/buck,justinmuller/buck,facebook/buck,robbertvanginkel/buck,k21/buck,LegNeato/buck,Addepar/buck,brettwooldridge/buck,raviagarwal7/buck,daedric/buck,vschs007/buck,grumpyjames/buck,daedric/buck,daedric/buck,Dominator008/buck,zhan-xiong/buck,shybovycha/buck,davido/buck,shs96c/buck,SeleniumHQ/buck,kageiit/buck,JoelMarcey/buck,shybovycha/buck,Addepar/buck,davido/buck,LegNeato/buck,JoelMarcey/buck,dsyang/buck,illicitonion/buck,sdwilsh/buck,JoelMarcey/buck,dsyang/buck,darkforestzero/buck,davido/buck,shs96c/buck,brettwooldridge/buck,JoelMarcey/buck,marcinkwiatkowski/buck,SeleniumHQ/buck,vschs007/buck,justinmuller/buck,brettwooldridge/buck,Dominator008/buck,raviagarwal7/buck,OkBuilds/buck,justinmuller/buck,sdwilsh/buck,dsyang/buck,facebook/buck,marcinkwiatkowski/buck,zpao/buck,k21/buck,rmaz/buck,vschs007/buck,dsyang/buck,zpao/buck,romanoid/buck,raviagarwal7/buck,robbertvanginkel/buck,zhan-xiong/buck,sdwilsh/buck,LegNeato/buck,davido/buck,shs96c/buck,darkforestzero/buck,OkBuilds/buck,k21/buck,illicitonion/buck,brettwooldridge/buck,romanoid/buck,Dominator008/buck,clonetwin26/buck,robbertvanginkel/buck,romanoid/buck,zhan-xiong/buck,davido/buck,dsyang/buck,OkBuilds/buck,zhan-xiong/buck,daedric/buck,illicitonion/buck,Addepar/buck,zhan-xiong/buck,clonetwin26/buck,ilya-klyuchnikov/buck,zhan-xiong/buck,grumpyjames/buck,clonetwin26/buck,SeleniumHQ/buck,SeleniumHQ/buck,shs96c/buck,sdwilsh/buck,ilya-klyuchnikov/buck,daedric/buck,shs96c/buck,davido/buck,illicitonion/buck,janicduplessis/buck,brettwooldridge/buck,zhan-xiong/buck,shs96c/buck,facebook/buck,Addepar/buck,rmaz/buck,sdwilsh/buck,LegNeato/buck,clonetwin26/buck,shs96c/buck,LegNeato/buck,darkforestzero/buck,robbertvanginkel/buck,k21/buck,kageiit/buck,marcinkwiatkowski/buck,illicitonion/buck,janicduplessis/buck,SeleniumHQ/buck,clonetwin26/buck,marcinkwiatkowski/buck,Dominator008/buck,dsyang/buck,zpao/buck,fac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