Suzero. Refactors dependencies in Makefile.standalone.
Suzero. Refactors dependencies in Makefile.standalone.

Uses the compiler's frontend -MD -MP options to auto-generate make
dependencies.

BUG=
R=stichnot@chromium.org

Review URL: https://codereview.chromium.org/1801273003 .

google/swiftshader,google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader