Merge from gnulib.

* lib/alloca.in.h: New version from gnulib, incorporating:
2012-07-03 alloca: add support for HP NonStop TNS/E native

ChangeLog

+2012-07-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Merge from gnulib.
+	* lib/alloca.in.h: New version from gnulib, incorporating:
+	2012-07-03 alloca: add support for HP NonStop TNS/E native
+
 2012-07-04  Dmitry Antipov  <dmantipov@yandex.ru>
 
 	* configure.in: If --enable-gcc-warnings, disable

lib/alloca.in.h

@@ -44,6 +44,13 @@
 #  define alloca _alloca
 # elif defined __DECC && defined __VMS
 #  define alloca __ALLOCA
+# elif defined __TANDEM && defined _TNS_E_TARGET
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *_alloca (unsigned short);
+#  pragma intrinsic (_alloca)
+#  define alloca _alloca
 # else
 #  include <stddef.h>
 #  ifdef  __cplusplus