Fixing Makefile in nacl-mounts to work incrementally.
Fixing Makefile in nacl-mounts to work incrementally.

BUG=None
TEST=None
R=arbenson@google.com
Review URL: http://codereview.chromium.org/7566048

git-svn-id: 84b3587ce119b778414dcb50e18b7479aacf4f1d@377 7dad1e8b-422e-d2af-fbf5-8013b78bd812

clchiou/naclports,yeyus/naclports,yeyus/naclports,Schibum/naclports,binji/naclports,kuscsik/naclports,adlr/naclports,Schibum/naclports,kuscsik/naclports,kosyak/naclports_samsung-smart-tv,Schibum/naclports,dtkav/naclports,kuscsik/naclports,adlr/naclports,dtkav/naclports,Schibum/naclports,clchiou/naclports,clchiou/naclports,binji/naclports,kuscsik/naclports,kosyak/naclports_samsung-smart-tv,adlr/naclports,dtkav/naclports,dtkav/naclports,yeyus/naclports,adlr/naclports,dtkav/naclports,binji/naclports,kosyak/naclports_samsung-smart-tv,adlr/naclports,clchiou/naclports,kosyak/naclports_samsung-smart-tv,binji/naclports,Schibum/naclports,kosyak/naclports_samsung-smart-tv,kuscsik/naclports,yeyus/naclports,binji/naclports,Schibum/naclports,yeyus/naclports,yeyus/naclports,clchiou/naclports