configure: Add function_check_broken(), simplify test
It can be used similar to header_check_broken, but it also tests for the
availability of functions along with the needed headers.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32298 b3059339-0415-0410-9bf9-f77b7e298cf2
Simplify libdca check using function_check_broken().
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32299 b3059339-0415-0410-9bf9-f77b7e298cf2
1000l: Fix shift amount in function_check_broken().
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32311 b3059339-0415-0410-9bf9-f77b7e298cf2