Fix the autotools build

Summary:
It was missing things.

Closes https://github.com/facebook/folly/issues/925

Reviewed By: yfeldblum

Differential Revision: D9631683

fbshipit-source-id: 3ea572ecf5b4d640b6cd2f376cd4c6916e43ed1d

folly/Makefile.am

@@ -334,6 +334,7 @@ nobase_follyinclude_HEADERS = \
 	LockTraits.h \
 	LockTraitsBoost.h \
 	logging/AsyncFileWriter.h \
+	logging/CustomLogFormatter.h \
 	logging/FileHandlerFactory.h \
 	logging/FileWriterFactory.h \
 	logging/GlogStyleFormatter.h \
@@ -628,6 +629,7 @@ libfolly_la_SOURCES = \
 	lang/ColdClass.cpp \
 	lang/SafeAssert.cpp \
 	logging/AsyncFileWriter.cpp \
+	logging/CustomLogFormatter.cpp \
 	logging/FileHandlerFactory.cpp \
 	logging/FileWriterFactory.cpp \
 	logging/GlogStyleFormatter.cpp \