Revert CONTRIBUTOR file removal

This reverts commit 30f1e52be3.

# Conflicts:
#	CMakeLists.txt

CMakeLists.txt

@@ -497,6 +497,22 @@ FILE(REMOVE include/lmmsconfig.h)
 FILE(GLOB LMMS_INCLUDES "${CMAKE_SOURCE_DIR}/include/*.h")
 LIST(SORT LMMS_INCLUDES)
 
+# Get list of all committers from git history, ordered by number of commits.
+# The CONTRIBUTORS file is used by AboutDialog. This information can be provided
+# with -DCONTRIBUTORS=/path/to/CONTRIBUTORS instead. For instance, to generate
+# this file for version 1.1.3, the command is:
+# 	git shortlog -sne v1.1.3 | cut -c8-
+FIND_PACKAGE(Git)
+IF(GIT_FOUND AND NOT CONTRIBUTORS)
+	SET(CONTRIBUTORS "${CMAKE_BINARY_DIR}/CONTRIBUTORS")
+	EXECUTE_PROCESS(
+		COMMAND "${GIT_EXECUTABLE}" shortlog -sne
+		COMMAND cut -c8-
+		OUTPUT_FILE "${CONTRIBUTORS}"
+		WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+		TIMEOUT 1)
+ENDIF()
+
 # embedded resources stuff
 IF(WIN32 OR WIN64)
 	# compile buildtools native

src/CMakeLists.txt

@@ -43,10 +43,7 @@ IF(WIN32)
 				DEPENDS "${CMAKE_BINARY_DIR}/lmms.rc")
 ENDIF()
 
-SET(lmms_EMBEDDED_RESOURCES
-	"${CMAKE_SOURCE_DIR}/doc/AUTHORS"
-	"${CMAKE_SOURCE_DIR}/LICENSE.txt"
-	"${CMAKE_SOURCE_DIR}/doc/CONTRIBUTORS")
+SET(lmms_EMBEDDED_RESOURCES "${CMAKE_SOURCE_DIR}/doc/AUTHORS" "${CMAKE_SOURCE_DIR}/LICENSE.txt" "${CONTRIBUTORS}")
 SET(LMMS_ER_H "${CMAKE_CURRENT_BINARY_DIR}/embedded_resources.h")
 ADD_CUSTOM_COMMAND(OUTPUT "${LMMS_ER_H}" COMMAND "${BIN2RES}" ARGS ${lmms_EMBEDDED_RESOURCES} > "${LMMS_ER_H}" DEPENDS bin2res)