Added support for region_2_region
Corrected mistakes from previous commit, labeled region_2_region_test with label StatoilData
Added logical test before printing error message
Fixed bug when adding historical summary keys for field values
Made changes after code-review: Now using method ecl_sum_fread_alloc_case(...) to read test files. Also made changes in style to follow coding standard for ERT
Merge pull request #111 from chflo/region_2_region

Region 2 region
Turned on warning as error in the main CMakeLists.txt file. Removed one warning in util_path by doing a void cast. Overrides compiler flag with Wno-error on a couple of files with errors. Should be fixed later.
Removed unused static function in enkf_main, it gave a warning. Removed warning as error exception in cmake file
Moved the no-warning-as-errors for the cmake check c files into the ert_check.cmake file
Reintroduced enkf_main_invalidate_cache as a commented out function, so that if it is actually used, and someone gets into trouble, it is easier for them to find it.
In stead of using void cast, move declaration into ifdef block
Merge pull request #112 from flikka/werror

Turning on warnings as errors
Merge pull request #114 from flikka/werror

In stead of using void cast, move declaration into ifdef block
Merge branch 'master' into MSW-130