Squash the following commits

Allow to build with android
https://github.com/omnirom/android_external_f2fs-tools/commit/86d84379a2a5d13a17e4c99867b489e6cf760eec

Make static for recovery
https://github.com/omnirom/android_external_f2fs-tools/commit/ee1645cfd0bec041ebaaa101c1bbd3388ee6a62b

Force static executables
https://github.com/omnirom/android_external_f2fs-tools/commit/7a2b4ef0a7e252968eecb940ba48bde6e63db383

fix void conflicting with dedupe
https://github.com/omnirom/android_external_f2fs-tools/commit/48e4f61466a7149f9ca7b201cafc2b266b695cba

Remove duplicate declarations
https://github.com/omnirom/android_external_f2fs-tools/commit/a1ee6b22f0c1b8d7bfeca5a24d7b9da4e1694392

Fix PAGE_SIZE undefined
https://github.com/omnirom/android_external_f2fs-tools/commit/6efe2587945ed4db4669e68c48286a40e6285008

Change-Id: Ic44a28b428e1eadd7c1994f4497fc1aa2611e4e7