doxy: fix conditional usage, ref warnings
authorJames Zern <jzern@google.com>
Thu, 15 Mar 2012 23:51:51 +0000 (16:51 -0700)
committerJames Zern <jzern@google.com>
Thu, 15 Mar 2012 23:51:51 +0000 (16:51 -0700)
commit6b7cf3077d6f9a166e0f82c1e91fd64a646d11b0
tree68f565454a95b945bda7d116a59333005cfd3a7b
parenteb0c5a6ffcdf29a23ba175a0bcdb36f290e53df4
doxy: fix conditional usage, ref warnings

doxygen < 1.7.? seems to have been more tolerant of single line
\if/\endif

This change fixes warnings such as:
mainpage.dox:13: warning: unable to resolve reference to `vp8_encoder-'
for \ref command
vpx_decoder.h:193: warning: explicit link request to 'n' could not be
resolved

Change-Id: If3d04af5ede1b0d1e2c63021d0e4ac8f98db20b2
mainpage.dox
usage.dox
vpx/vpx_decoder.h