Encode/Decode groupSizeEncoding fields in forwards order
* Fixed the ant build for cpp98 so that the new SBE_HAS_CMATH #define could be included in the unit tests & such during the build.
* Simply do: "ant -Dcpp.has.cmath cpp", and the build should work.
Fixed misspelled variable name.
[cpp] Changed #include statements to use '<file.h>' instead of '"file.h"'.  This allows cpp projects to more easily share the generated files by setting include paths.
Merge pull request #151 from shonlove/fix-cpp-includes

[CPP] Changed #include statements to use '<file.h>' instead of '"file.h"
Merge pull request #149 from shonlove/fix-cpp-ant-build

The ant build doesn't support the new SBE_HAS_CMATH #define
Merge pull request #148 from qed-/group-dimensions-ordering

Encode/Decode groupSizeEncoding fields in forwards order
[all]: fix for param ordering from pull request #148