[tex-live] TEXFONTS for Type 1's, and more debugging

[Karl Berry]

I've just been pretty frustrated trying to track down what environment
variable I have to set to find some local Type 1 fonts.  (For various
reasons I do not want to install them in the hierarchy.)  Even dvips
-d-1 did not explicitly report the needed information, I had to look at
the source.  (The documentation was hopelessly out of date, sigh.)

I have two simple suggestions/requests which would help immensely, both
in kpathsea/tex-file.c:

1) add "TEXFONTS" to the list of TYPE1_ENVS (after T1INPUTS and before
   TEX_PS_HEADER_ENVS).  The purpose of TEXFONTS is to be used to find
   *all* font-related files.  So that, as in my case, if someone just
   wants to make a directory with a personal font, it is (hopefully)
   easy to do.

2) In kpse_find_file, add a debug statement reporting the type and
   path_source members of the struct.

Ok?

Thanks,
k