Add src/core/*.h not core/*.h to SOURCES for distfiles.

Originally committed to SVN as r3126.

Add src/core/.h not core/.h to SOURCES for distfiles.
712fd197 · Amar Takhar · 27bb2819 · 712fd197
--- a/aegisub/libffms/Makefile.am
+++ b/aegisub/libffms/Makefile.am
@@ -25,4 +25,4 @@ libffmpegsource_aegisub_a_SOURCES = \
 	src/core/wave64writer.cpp

 libffmpegsource_aegisub_a_SOURCES += \
-	core/*.h
+	src/core/*.h