Support for GCC 4.7

Support for GCC 4.7

Compatibility with GCC v 4.7 is required.

This commit fix problems with compilation with GCC 4.7.

[Issue#] N/A
[Bug] The repository causes build break with GCC 4.7
[Cause] N/A
[Solution] Source code adjusted to GCC 4.7

[Verification]
1. Build repository with GCC in current (4.5) and 4.7 version.

Change-Id: I8a0839e7a9d78b86c16f8feccecac3e3fbfd3ea0