ghc: Depends on ncurses to bootstrap for Linuxbrew
ghc: Depends on ncurses to bootstrap for Linuxbrew

Fix ghc-stage2: error while loading shared libraries: libncursesw.so.5

Closes Linuxbrew/linuxbrew#882.

Closes Linuxbrew/linuxbrew#978.

Signed-off-by: Shaun Jackman <b580dab3251a9622aba3803114310c23fdb42900@gmail.com>

Linuxbrew/linuxbrew,sjackman/linuxbrew,Angeldude/linuxbrew,reelsense/linuxbrew,sjackman/linuxbrew,gnubila-france/linuxbrew,SuperNEMO-DBD/cadfaelbrew,SuperNEMO-DBD/cadfaelbrew,SuperNEMO-DBD/cadfaelbrew,Linuxbrew/linuxbrew,Linuxbrew/linuxbrew,Homebrew/linuxbrew,gnubila-france/linuxbrew,Homebrew/linuxbrew,saketkc/linuxbrew,reelsense/linuxbrew,Angeldude/linuxbrew,reelsense/linuxbrew,Angeldude/linuxbrew,saketkc/linuxbrew,sjackman/linuxbrew,gnubila-france/linuxbrew,saketkc/linuxbrew,saketkc/linuxbrew,Angeldude/linuxbrew,reelsense/linuxbrew,Linuxbrew/linuxbrew,SuperNEMO-DBD/cadfaelbrew,sjackman/linuxbrew,Homebrew/linuxbrew,Homebrew/linuxbrew,gnubila-france/linuxbrew