Add temp-check, with_temp_install definition - 9.4

Commit fa4a4df attempted to backpatch
to 9.4 a change to improve the logging of TAP tests.  Unfortunately, due
to how 9.4 and 9.5 had diverged, the backpatch to 9.4 depended on a few
things which didn't exist in 9.4 (but did in 9.5), specifically, the
'temp-check' production and the 'with_temp_install' definition (which
also required 'abs_top_builddir').

Add these definitions into REL9_4_STABLE to allow the TAP tests to run
correctly under 'make check'.

Author: sfrost

src/Makefile.global.in

@@ -59,6 +59,7 @@ endif
 endif
 else # not PGXS
 vpath_build = @vpath_build@
+abs_top_builddir = @abs_top_builddir@
 abs_top_srcdir = @abs_top_srcdir@
 
 ifneq ($(vpath_build),yes)
@@ -316,6 +317,19 @@ BZIP2	= bzip2
 
 # Testing
 
+check: temp-install
+
+.PHONY: temp-install
+temp-install:
+ifndef NO_TEMP_INSTALL
+ifeq ($(MAKELEVEL),0)
+	rm -rf '$(abs_top_builddir)'/tmp_install
+	$(MKDIR_P) '$(abs_top_builddir)'/tmp_install/log
+	$(MAKE) -C '$(top_builddir)' DESTDIR='$(abs_top_builddir)'/tmp_install install >'$(abs_top_builddir)'/tmp_install/log/install.log 2>&1
+endif
+	$(if $(EXTRA_INSTALL),for extra in $(EXTRA_INSTALL); do $(MAKE) -C '$(top_builddir)'/$$extra DESTDIR='$(abs_top_builddir)'/tmp_install install >>'$(abs_top_builddir)'/tmp_install/log/install.log || exit; done)
+endif
+
 PROVE = @PROVE@
 PG_PROVE_FLAGS = -I $(top_srcdir)/src/test/perl/
 PROVE_FLAGS = --verbose
@@ -330,6 +344,10 @@ define ld_library_path_var
 $(if $(filter $(PORTNAME),darwin),DYLD_LIBRARY_PATH,$(if $(filter $(PORTNAME),aix),LIBPATH,LD_LIBRARY_PATH))
 endef
 
+define with_temp_install
+PATH="$(abs_top_builddir)/tmp_install$(bindir):$$PATH" $(call add_to_path,$(ld_library_path_var),$(abs_top_builddir)/tmp_install$(libdir))
+endef
+
 ifeq ($(enable_tap_tests),yes)
 
 define prove_installcheck