Fix libgfortran shared library for NaCl.

libobjc/configure

Index: libobjc/configure
diff --git a/libobjc/configure b/libobjc/configure
index 5f75083bd74237840af2a5607639e512e1db59a7..96c680948f7484b19ebb03c360ddd9cf4e87f3b1 100755
--- a/libobjc/configure
+++ b/libobjc/configure
@@ -9095,6 +9095,21 @@ linux*oldld* | linux*aout* | linux*coff*)
   dynamic_linker=no
   ;;
 
+nacl*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+
+  # This implies no fast_install, which is unacceptable.
+  # Some rework will be needed to allow for fast_install
+  # before this can be enabled.
+  hardcode_into_libs=yes
+  ;;
+
 # This must be Linux ELF.
 linux* | k*bsd*-gnu | kopensolaris*-gnu)
   version_type=linux