Build debug and relwithdebinfo configs in CI first

 - This way, more useful debug information is emitted by Travis-CI

Author: zbeekman

.travis.yml

@@ -12,7 +12,7 @@ env:
     - MPICH_GCC6_BOT_URL_HEAD="https://github.com/sourceryinstitute/OpenCoarrays/files/1956499/"
     - MPICH_GCC7_BOT_URL_HEAD="https://github.com/sourceryinstitute/OpenCoarrays/files/1956441/"
     - MPICH_BOT_URL_TAIL="mpich-3.2.1_1.high_sierra.bottle.1.tar.gz"
-    - BUILD_TYPES="Release Debug RelWithDebInfo CodeCoverage"
+    - BUILD_TYPES="Debug RelWithDebInfo Release CodeCoverage"
   matrix:
     - GCC=6 OSX_PACKAGES="gcc@6 shellcheck" BUILD_TYPE="InstallScript"
     - GCC="6 7" OSX_PACKAGES="gcc gcc@6 cmake shellcheck" BUILD_TYPE="cmake"