LP#1243841 - Quiet remaining Make install warnings.

LP#1243841 - Quiet remaining Make install warnings.

We silence the following warnings:

apachetools.c:179:15: warning: initialization discards 'const' qualifier from pointer target type [enabled by default]

apachetools.c:181:8: warning: assignment discards 'const' qualifier from pointer target type [enabled by default]

apachetools.c:183:8: warning: assignment discards 'const' qualifier from pointer target type [enabled by default]

./osrf_websocket_translator.c:541:9: warning: return makes integer from pointer without a cast [enabled by default]

./osrf_http_translator.c:300:25: warning: passing argument 1 of 'free' discards 'const' qualifier from pointer target type [enabled by default]

Signed-off-by: Jason Stephenson <jason@sigio.com>