Fixes #175 - DirectBuffer.CheckLimit() checks previous value not the value being set
[C++]: free header IR when reading in new collection. Fixes #169.
[CSharp] #175 fixed re-generated previously generated csharp files
Merge pull request #179 from csoroiu/checklimit

Checklimit
Merge pull request #170 from csoroiu/master

[Java] 1. Moved BitUtil to the u.c.r.sbe.codec.java package (it is relat...
[Java][Android] Portability/cosmetic changes (needed for #171):
1. ValidationTool changed to not depend on tools.jar (unavailable on some platforms)
2. XmlParser was depending on some constants inside SbeTool. Added ParserOptions class and reversed the dependency.
3. TestUtil was enhanced to load resources from classpath rather than directory on disk.
4. replaced some test jars because of some warnings on android.
5. fixed "test" target. After #96 fix does not make sense to have different entry for JavaGeneratorTest + some typo.