- Mesa.spec: %ifdef'd out patches by mistake

- Split off nouveau*_dri.so into Mesa-dri-nouveau.
Nouveau's 3D support is too unstable to enable by default.

- Mesa.spec: Disable Nouveau locking patches by default

- U_r300g-Set-R300_VAP_CNTL-on-RSxxx-to-avoid-triangle-flickering.patch:
Initialize RSxxx chipsets correctly (bsc#985650)

- N_01-WIP-nouveau-add-locking.patch
N_02-nouveau-more-locking-make-sure-that-fence-work-is-always-done-with-the-push-mutex-acquired.patch
N_03-nv30-locking-fixes.patch
N_04-nv50-Fix-double-lock-in-nv50_hw_sm_get_query_result.patch
N_05-Use-nv50_render_condition-in-nv50_blitctx_post_blit.patch
Backport nouveau locking workaround to enable multithreading.
Source: https://github.com/imirkin/mesa/commits/locking
According to the author, crashes may still happen, but much more rarely.
Tested on GK107.
N_04-* and N_05-* include untested fixes for nv50.
Fixes (boo#997171) as suggested in (fdo#91632).