Create v0.5.x release branch

Author: coryan

google/cloud/CMakeLists.txt

@@ -17,7 +17,7 @@
 # Set this variable to a true value for branches that are releases. That will
 # remove the "+dev" suffix (technically "build metadata" according to
 # semver.org). We only want that suffix on development branches.
-set(GOOGLE_CLOUD_CPP_IS_RELEASE "")
+set(GOOGLE_CLOUD_CPP_IS_RELEASE "yes")
 
 # This should be included from the top level CMakeLists file
 set(GOOGLE_CLOUD_CPP_VERSION_MAJOR 0)

google/cloud/google_cloud_cpp_common_version.bzl

@@ -16,7 +16,7 @@
 
 """Automatically generated version numbers - DO NOT EDIT."""
 
-GOOGLE_CLOUD_CPP_IS_RELEASE = ""
+GOOGLE_CLOUD_CPP_IS_RELEASE = "yes"
 GOOGLE_CLOUD_CPP_VERSION_MAJOR = "0"
 GOOGLE_CLOUD_CPP_VERSION_MINOR = "3"
 GOOGLE_CLOUD_CPP_VERSION_PATCH = "0"