Add port/strnlen support to libpq and ecpg Makefiles.

In the wake of fffd651e8, any makefile that pulls in snprintf.c
from src/port/ needs to be prepared to pull in strnlen.c as well.
Per buildfarm.

src/interfaces/ecpg/compatlib/.gitignore

@@ -2,3 +2,4 @@
 /blibecpg_compatdll.def
 /exports.list
 /snprintf.c
+/strnlen.c

src/interfaces/ecpg/compatlib/Makefile

@@ -31,7 +31,7 @@ SHLIB_EXPORTS = exports.txt
 # Need to recompile any libpgport object files
 LIBS := $(filter-out -lpgport, $(LIBS))
 
-OBJS= informix.o $(filter snprintf.o, $(LIBOBJS)) $(WIN32RES)
+OBJS= informix.o $(filter snprintf.o strnlen.o, $(LIBOBJS)) $(WIN32RES)
 
 PKG_CONFIG_REQUIRES_PRIVATE = libecpg libpgtypes
 
@@ -48,7 +48,7 @@ submake-pgtypeslib:
 # Shared library stuff
 include $(top_srcdir)/src/Makefile.shlib
 
-snprintf.c: % : $(top_srcdir)/src/port/%
+snprintf.c strnlen.c: % : $(top_srcdir)/src/port/%
 	rm -f $@ && $(LN_S) $< .
 
 install: all installdirs install-lib
@@ -58,6 +58,6 @@ installdirs: installdirs-lib
 uninstall: uninstall-lib
 
 clean distclean: clean-lib
-	rm -f $(OBJS) snprintf.c
+	rm -f $(OBJS) snprintf.c strnlen.c
 
 maintainer-clean: distclean maintainer-clean-lib

src/interfaces/ecpg/ecpglib/.gitignore

@@ -5,6 +5,7 @@
 /pgstrcasecmp.c
 /snprintf.c
 /strlcpy.c
+/strnlen.c
 /thread.c
 /win32setlocale.c
 /isinf.c

src/interfaces/ecpg/ecpglib/Makefile

@@ -27,7 +27,8 @@ LIBS := $(filter-out -lpgport, $(LIBS))
 
 OBJS= execute.o typename.o descriptor.o sqlda.o data.o error.o prepare.o memory.o \
 	connect.o misc.o path.o pgstrcasecmp.o \
-	$(filter snprintf.o strlcpy.o win32setlocale.o isinf.o, $(LIBOBJS)) $(WIN32RES)
+	$(filter snprintf.o strlcpy.o strnlen.o win32setlocale.o isinf.o, $(LIBOBJS)) \
+	$(WIN32RES)
 
 # thread.c is needed only for non-WIN32 implementation of path.c
 ifneq ($(PORTNAME), win32)
@@ -55,7 +56,7 @@ include $(top_srcdir)/src/Makefile.shlib
 # necessarily use the same object files as the backend uses. Instead,
 # symlink the source files in here and build our own object file.
 
-path.c pgstrcasecmp.c snprintf.c strlcpy.c thread.c win32setlocale.c isinf.c: % : $(top_srcdir)/src/port/%
+path.c pgstrcasecmp.c snprintf.c strlcpy.c strnlen.c thread.c win32setlocale.c isinf.c: % : $(top_srcdir)/src/port/%
 	rm -f $@ && $(LN_S) $< .
 
 misc.o: misc.c $(top_builddir)/src/port/pg_config_paths.h
@@ -72,6 +73,6 @@ uninstall: uninstall-lib
 
 clean distclean: clean-lib
 	rm -f $(OBJS)
-	rm -f path.c pgstrcasecmp.c snprintf.c strlcpy.c thread.c win32setlocale.c isinf.c
+	rm -f path.c pgstrcasecmp.c snprintf.c strlcpy.c strnlen.c thread.c win32setlocale.c isinf.c
 
 maintainer-clean: distclean maintainer-clean-lib

src/interfaces/ecpg/pgtypeslib/.gitignore

@@ -4,3 +4,4 @@
 /pgstrcasecmp.c
 /rint.c
 /snprintf.c
+/strnlen.c

src/interfaces/ecpg/pgtypeslib/Makefile

@@ -31,7 +31,8 @@ SHLIB_EXPORTS = exports.txt
 
 OBJS= numeric.o datetime.o common.o dt_common.o timestamp.o interval.o \
 	pgstrcasecmp.o \
-	$(filter rint.o snprintf.o, $(LIBOBJS)) $(WIN32RES)
+	$(filter rint.o snprintf.o strnlen.o, $(LIBOBJS)) \
+	$(WIN32RES)
 
 all: all-lib
 
@@ -43,7 +44,7 @@ include $(top_srcdir)/src/Makefile.shlib
 # necessarily use the same object files as the backend uses. Instead,
 # symlink the source files in here and build our own object file.
 
-pgstrcasecmp.c rint.c snprintf.c: % : $(top_srcdir)/src/port/%
+pgstrcasecmp.c rint.c snprintf.c strnlen.c: % : $(top_srcdir)/src/port/%
 	rm -f $@ && $(LN_S) $< .
 
 install: all installdirs install-lib
@@ -53,6 +54,6 @@ installdirs: installdirs-lib
 uninstall: uninstall-lib
 
 clean distclean: clean-lib
-	rm -f $(OBJS) pgstrcasecmp.c rint.c snprintf.c
+	rm -f $(OBJS) pgstrcasecmp.c rint.c snprintf.c strnlen.c
 
 maintainer-clean: distclean maintainer-clean-lib