Split all OBJS style lines in makefiles into one-line-per-entry style.

When maintaining or merging patches, one of the most common sources
for conflicts are the list of objects in makefiles. Especially when
the split across lines has been changed on both sides, which is
somewhat common due to attempting to stay below 80 columns, those
conflicts are unnecessarily laborious to resolve.

By splitting, and alphabetically sorting, OBJS style lines into one
object per line, conflicts should be less frequent, and easier to
resolve when they still occur.

Author: Andres Freund
Discussion: https://postgr.es/m/20191029200901.vww4idgcxv74cwes@alap3.anarazel.de

src/backend/storage/buffer/Makefile

@@ -12,6 +12,11 @@ subdir = src/backend/storage/buffer
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS = buf_table.o buf_init.o bufmgr.o freelist.o localbuf.o
+OBJS = \
+	buf_init.o \
+	buf_table.o \
+	bufmgr.o \
+	freelist.o \
+	localbuf.o
 
 include $(top_srcdir)/src/backend/common.mk

src/backend/storage/file/Makefile

@@ -12,6 +12,11 @@ subdir = src/backend/storage/file
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS = fd.o buffile.o copydir.o reinit.o sharedfileset.o
+OBJS = \
+	buffile.o \
+	copydir.o \
+	fd.o \
+	reinit.o \
+	sharedfileset.o
 
 include $(top_srcdir)/src/backend/common.mk

src/backend/storage/freespace/Makefile

@@ -12,6 +12,9 @@ subdir = src/backend/storage/freespace
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS = freespace.o fsmpage.o indexfsm.o
+OBJS = \
+	freespace.o \
+	fsmpage.o \
+	indexfsm.o
 
 include $(top_srcdir)/src/backend/common.mk

src/backend/storage/ipc/Makefile

@@ -8,8 +8,23 @@ subdir = src/backend/storage/ipc
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS = barrier.o dsm_impl.o dsm.o ipc.o ipci.o latch.o pmsignal.o procarray.o \
-	procsignal.o shmem.o shmqueue.o shm_mq.o shm_toc.o signalfuncs.o \
-	sinval.o sinvaladt.o standby.o
+OBJS = \
+	barrier.o \
+	dsm.o \
+	dsm_impl.o \
+	ipc.o \
+	ipci.o \
+	latch.o \
+	pmsignal.o \
+	procarray.o \
+	procsignal.o \
+	shm_mq.o \
+	shm_toc.o \
+	shmem.o \
+	shmqueue.o \
+	signalfuncs.o \
+	sinval.o \
+	sinvaladt.o \
+	standby.o
 
 include $(top_srcdir)/src/backend/common.mk

src/backend/storage/large_object/Makefile

@@ -12,6 +12,7 @@ subdir = src/backend/storage/large_object
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS = inv_api.o
+OBJS = \
+	inv_api.o
 
 include $(top_srcdir)/src/backend/common.mk

src/backend/storage/lmgr/Makefile

@@ -12,8 +12,17 @@ subdir = src/backend/storage/lmgr
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS = lmgr.o lock.o proc.o deadlock.o lwlock.o lwlocknames.o spin.o \
-	s_lock.o predicate.o condition_variable.o
+OBJS = \
+	condition_variable.o \
+	deadlock.o \
+	lmgr.o \
+	lock.o \
+	lwlock.o \
+	lwlocknames.o \
+	predicate.o \
+	proc.o \
+	s_lock.o \
+	spin.o
 
 include $(top_srcdir)/src/backend/common.mk
 

src/backend/storage/page/Makefile

@@ -12,7 +12,10 @@ subdir = src/backend/storage/page
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS =  bufpage.o checksum.o itemptr.o
+OBJS =  \
+	bufpage.o \
+	checksum.o \
+	itemptr.o
 
 include $(top_srcdir)/src/backend/common.mk
 

src/backend/storage/smgr/Makefile

@@ -12,6 +12,8 @@ subdir = src/backend/storage/smgr
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS = md.o smgr.o
+OBJS = \
+	md.o \
+	smgr.o
 
 include $(top_srcdir)/src/backend/common.mk

src/backend/storage/sync/Makefile

@@ -12,6 +12,7 @@ subdir = src/backend/storage/sync
 top_builddir = ../../../..
 include $(top_builddir)/src/Makefile.global
 
-OBJS = sync.o
+OBJS = \
+	sync.o
 
 include $(top_srcdir)/src/backend/common.mk