tree c0bfde306669ba9f32eb0d82c0c5d94db09b6fce
parent 4c3263bd659622cf99860901d194d533621f9220
author James Zern <jzern@google.com> 1635898750 -0700
committer James Zern <jzern@google.com> 1636075004 +0000

tools_common.h: add AOM_TOOLS_FORMAT_PRINTF

and use it to set the format attribute for printf like functions. this
allows the examples to be built with -Wformat-nonliteral without
producing warnings.

this is the same change that was applied in libvpx:
dd10ac8f6 tools_common.h: add VPX_TOOLS_FORMAT_PRINTF

Bug: webm:1744
Change-Id: I26b4c41c9a42790053b1ae0e4a678af8f2cd1d82