Merge revisions 1102-1105 from PRODUCTION_1_0_x branch.

r1105:

socket-unix.cxx: Always set ai_flags to AI_CANONNAME. Add
AI_NUMERICHOST if the hostname looks like an IP address.


r1104:

socket-unix.cxx: Fix get_host_by_name().


r1103:

socket-unix.cxx: Implement new function get_host_by_name() as a
wrapper around either getaddrinfo() or around gethostbyname()
protected by mutex. This is to fix crashes on Linux and other systems
where gethostbyname() is not thread safe because it uses static
storage for its result. Use the new function instead of
gethostbyname().


r1102:

ax_gethostbyname_r.m4 (AX_GETHOSTBYNAME_R): New test for Linux style
gethostbyname_r().

ax_getaddrinfo.m4 (AX_GETADDRINFO): New test for getaddrinfo().

configure.in: Use AX_GETHOSTBYNAME_R and AX_GETADDRINFO. Make test for
ENAMETOOLONG visible in the configure output.

*: Regenerate.

Author: wilx

Makefile.in

@@ -54,7 +54,8 @@ am__aclocal_m4_deps = $(top_srcdir)/m4/libtool.m4 \
 	$(top_srcdir)/m4/ax__sync.m4 \
 	$(top_srcdir)/m4/ax_macro_va_args.m4 \
 	$(top_srcdir)/m4/ax_macro_function.m4 \
-	$(top_srcdir)/configure.in
+	$(top_srcdir)/m4/ax_gethostbyname_r.m4 \
+	$(top_srcdir)/m4/ax_getaddrinfo.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \

acinclude.m4

@@ -8,4 +8,6 @@ m4_include([m4/ax_declspec.m4])
 m4_include([m4/ax_tls_support.m4])
 m4_include([m4/ax__sync.m4])
 m4_include([m4/ax_macro_va_args.m4])
-m4_include([m4/ax_macro_function.m4])
+m4_include([m4/ax_macro_function.m4])
+m4_include([m4/ax_gethostbyname_r.m4])
+m4_include([m4/ax_getaddrinfo.m4])