Fixing glibc build of tk.
Fixing glibc build of tk.

Adding -fPIC to tcl build as the lack of it causes a problem when linked into
tk.

BUG=None
TEST=local
R=binji@chromium.org

Review URL: https://codereview.chromium.org/493533002

git-svn-id: 84b3587ce119b778414dcb50e18b7479aacf4f1d@1546 7dad1e8b-422e-d2af-fbf5-8013b78bd812

yeyus/naclports,dtkav/naclports,yeyus/naclports,dtkav/naclports,Schibum/naclports,kuscsik/naclports,Schibum/naclports,Schibum/naclports,Schibum/naclports,dtkav/naclports,yeyus/naclports,Schibum/naclports,dtkav/naclports,Schibum/naclports,kuscsik/naclports,yeyus/naclports,kuscsik/naclports,kuscsik/naclports,yeyus/naclports,dtkav/naclports,kuscsik/naclports,yeyus/naclports