'#####' comment handling in aclocal

[Peter Simons]

Hi,

the Autoconf Macro Archive distributes m4 source codes that
contain comment lines beginning with multiple '#' characters,
i.e. five of them, as in the following example:

  http://autoconf-archive.cryp.to/acx_blas.m4

It appears that aclocal strips those "##### ..." comments while
copying the macros into the generated aclocal.m4 file.

I was wondering whether this behavior is intentional and,
assuming that it is, what the rationale behind this decision
might be. I'd appreciate any feedback on this matter.

Best regards,
Peter