* intrinsic.c (add_functions): Add function version of TTYNAM.
* intrinsic.h: Add prototypes for gfc_check_ttynam and
gfc_resolve_ttynam.
* gfortran.h: Add case for GFC_ISYM_TTYNAM.
* iresolve.c (gfc_resolve_ttynam): New function.
* trans-decl.c (gfc_build_intrinsic_function_decls): Add a tree
for function call to library ttynam.
* check.c (gfc_check_ttynam): New function.
* trans-intrinsic.c (gfc_conv_intrinsic_ttynam): New function.
(): Call gfc_conv_intrinsic_ttynam.
* trans.h: Add prototype for gfor_fndecl_ttynam.
* intrinsics/tty.c (ttynam): New function.
From-SVN: r106522