[Bug-indent] texinfo2man bug in 2.2.8

[Vin Shelton]

To whom it may concern:

When attempting to build indent-2.2.8 with the build directory
(.../build/SunOS-5.5/indent-2.2.8) separate from the source directory
(.../src/indent-2.2.8), I ran into a few problems:

1. First, the Man/Makefile needs to specify texinfo2man as a relative
   file:

    gcc -DHAVE_CONFIG_H -I. -I../../../../src/indent-2.2.8/man -I..     -g -O2 
-c `test -f ../../../../src/indent-2.2.8/man/texinfo2man.c || echo 
'../../../../src/indent-2.2.8/man/'`../../../../src/indent-2.2.8/man/texinfo2man.c
    gcc  -g -O2   -o texinfo2man  texinfo2man.o  
    texinfo2man indent.1.in ../doc/indent.texinfo > indent.1
    /bin/sh: texinfo2man: not found

This needs to be expressed as ./texinfo2man.

2. Next, neither indent.1.in nor ../doc/indent.texinfo can be found
   off the current directory.  They should be referenced in the
   Makefile off of $(srcdir).  I tried to submit a patch for this, but
   I don't yet grok automake, so I don't know how to do that.

3. In texinfo2man.c, process_texi does not check to see that the
   specified input stream exists, so the command:
    ./texinfo2man x y
   generates a segfault when either the file x or the file y does not
   exist.

HTH,
  Vin Shelton