configure.ac: move require_dri_shared_libs_and_glapi() before its users
configure.ac: move require_dri_shared_libs_and_glapi() before its users

Otherwise we'll get a lovely message as below:
"require_dri_shared_libs_and_glapi: command not found"

Cc: Steven Newbury <9ce5770b3bb4b2a1d59be2d97e34379cd192299f@snewbury.org.uk>
Reported-by: Steven Newbury <9ce5770b3bb4b2a1d59be2d97e34379cd192299f@snewbury.org.uk>
Fixes: da410e6afad "configure: explicitly require shared glapi for
enable-dri"
Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
Tested-by: Steven Newbury <9ce5770b3bb4b2a1d59be2d97e34379cd192299f@snewbury.org.uk>
Reviewed-by: Nicolai Hähnle <0d0be6cf5ad662651be2dc5dfd44aa2b09d4c1cc@amd.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler