[krbdev.mit.edu #2992] Kerberos 1.4 will not build gssapi_krb5.h on AIX 5.2

[Sam Hartman via RT]

Hi.  When including a patch, please explain why the patch is necessary
and what the patch accomplishes.  Also, please don't send patches
against auto-generated files like Makefile; instead patch the
Makefile.in and confirm that the patch works across configure runs.

As far as I can tell, the original code is reasonable and works on
other systems.  certainly avoiding continuation lines in makefiles
will be a significant problem for the Kerberos build system.