[Bug-gsl] git source: doc/examples wants gaussfilt.c, but it does not exist

[Hans-Bernhard Bröker]

Hello all,

as of yesterday's commit 4cbb37d11189bc5bab3c8243bcfa45ff2ef75d22
the git version of doc/examples/Makefile.am requests a non-existing 
source-file which was apparently supposed to be added as part of commit:

$ LANG=C make -C doc/examples
make: Entering directory '/home/hbbro/src/gnu/GSL/bld_cygwin/doc/examples'
make: *** No rule to make target 'gaussfilt.c', needed by 'all-am'.  Stop.
make: Leaving directory '/home/hbbro/src/gnu/GSL/bld_cygwin/doc/examples'