corebase: missing CFAvailability.h entry in GNUmakefile

[Daniel Ferreira (theiostream)]

Hi Stefan (or anyone who could write to the libs-corebase repository right now),

In a revision from two days ago a CFAvailability.h header has been
added; however, it does not have an entry in the header list for the
GNUmakefile, which means it does not get installed if I try to build
it, causing builds that link against CoreBase to fail.

Could anyone add that to the GNUmakefile? The patch is:

diff --git a/Source/GNUmakefile.in b/Source/GNUmakefile.in
index ff9ba3d..7954d49 100644
--- a/Source/GNUmakefile.in
+++ b/Source/GNUmakefile.in
@@ -53,6 +53,7 @@ libgnustep-corebase_C_FILES = \

 libgnustep-corebase_HEADER_FILES = \
   CoreFoundation.h \
+  CFAvailability.h \
   CFArray.h \
   CFAttributedString.h \
   CFBag.h \

This seems to be another issue that could be very easily solved by
adding a CI routine to the repo. I'll try to address that later.

-- Daniel.