Merge branch 'rj/make-cleanup'

A build tweak knob has been simplified by not setting the value
that is already the default; another unused one has been removed.

* rj/make-cleanup:
  config.mak.uname: remove unused uname_P variable
  Makefile: drop -Wno-universal-initializer from SP_EXTRA_FLAGS

Author: gitster

Makefile

@@ -1376,7 +1376,7 @@ PTHREAD_CFLAGS =
 
 # For the 'sparse' target
 SPARSE_FLAGS ?= -std=gnu99
-SP_EXTRA_FLAGS = -Wno-universal-initializer
+SP_EXTRA_FLAGS =
 
 # For informing GIT-BUILD-OPTIONS of the SANITIZE=leak,address targets
 SANITIZE_LEAK =

config.mak.uname

@@ -8,7 +8,6 @@ uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
 uname_M := $(shell sh -c 'uname -m 2>/dev/null || echo not')
 uname_O := $(shell sh -c 'uname -o 2>/dev/null || echo not')
 uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')
-uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not')
 uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
 
 ifneq ($(findstring MINGW,$(uname_S)),)