IVGCVSW-2454 Merge together the pluggable backends work (was in a
separate branch) and master

 * Brings in all the changes done for the pluggable backends
 * Added sub-graph support and tests
 * Added precompiled layer support and tests
 * Moved BackendSettings to a separate file
 * Removed the backend-specific code
 * Ported DebugLayer and associated functionality
 * Included fixes to make those changes work with master

Change-Id: Id7028fa7917527b844628d5aff5732e3d94c0488
diff --git a/src/backends/backends.cmake b/src/backends/backends.cmake
index c82de8d..438fda3 100644
--- a/src/backends/backends.cmake
+++ b/src/backends/backends.cmake
@@ -5,8 +5,8 @@
 
 # single place to use wildcards, so we can include
 # yet unknown backend modules and corresponding common libraries
-FILE(GLOB commonIncludes ${PROJECT_SOURCE_DIR}/src/backends/*/common.cmake)
-FILE(GLOB backendIncludes ${PROJECT_SOURCE_DIR}/src/backends/*/backend.cmake)
+file(GLOB commonIncludes ${PROJECT_SOURCE_DIR}/src/backends/*/common.cmake)
+file(GLOB backendIncludes ${PROJECT_SOURCE_DIR}/src/backends/*/backend.cmake)
 
 # prefer to include common code first
 foreach(includeFile ${commonIncludes})