mesa: Fix copy-and-paste bug in _mesa_(Program|)Uniform[1234](i|ui)64vARB functions

mesa: Fix copy-and-paste bug in _mesa_(Program|)Uniform[1234](i|ui)64vARB functions

All of the functions were passing 1 to _mesa_uniform instead of passing
count.

Fixes 16 unsed parameter warnings like:

main/uniforms.c: In function ‘_mesa_Uniform1i64vARB’:
main/uniforms.c:1692:47: warning: unused parameter ‘count’ [-Wunused-parameter]
 _mesa_Uniform1i64vARB(GLint location, GLsizei count, const GLint64 *value)
                                               ^~~~~

This is why I build with extra warnings enabled.  Unfortunately, there
are so many unused parameter warnings in Mesa that I didn't notice these
added warnings for over 6 months. :(

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>