enable gtest by default when using premake, added flag without-gtest use gtest ASSERT_EQ( expected_value, actual_value) instead of the reverse, this fixes issue 205 (https://github.com/bulletphysics/bullet3/issues/205)
enable gtest by default when using premake, added flag without-gtest use gtest ASSERT_EQ( expected_value, actual_value) instead of the reverse, this fixes issue 205 (https://github.com/bulletphysics/bullet3/issues/205)