[libgdata] build: Add missing configure checks spotted by autoscan

[Philip Withnall <pwithnall src gnome org>]

commit ae6134187af336a878d460817441a58b0a9b2365
Author: Philip Withnall <philip tecnocode co uk>
Date:   Sat Aug 9 16:39:10 2014 +0100

    build: Add missing configure checks spotted by autoscan
    
    Thanks, autoscan!

 configure.ac |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4d0ad8a..20dac76 100644
--- a/configure.ac
+++ b/configure.ac
@@ -147,9 +147,15 @@ dnl ****************************
 PKG_CHECK_MODULES(UHTTPMOCK, libuhttpmock-0.0)
 
 # Various necessary functions and headers
+AC_CHECK_FUNCS([memset])
+AC_CHECK_FUNCS([setlocale])
 AC_CHECK_FUNCS([strchr])
 AC_CHECK_FUNCS([strstr])
 AC_CHECK_HEADERS([sys/time.h])
+AC_CHECK_HEADERS([arpa/inet.h])
+AC_CHECK_HEADERS([locale.h])
+AC_CHECK_HEADERS([netinet/in.h])
+AC_CHECK_HEADERS([sys/socket.h])
 
 # Internationalisation support
 GETTEXT_PACKAGE=gdata