Support for 32-bit Linux in Jerry's libc.

build/configs/toolchain_linux_i686.cmake

@@ -0,0 +1,19 @@
+# Copyright 2015 Samsung Electronics Co., Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR x86)
+
+set(CMAKE_C_COMPILER i686-linux-gnu-gcc)
+set(CMAKE_CXX_COMPILER i686-linux-gnu-g++)