xspice, move `-lm' to the end of the linker command line
prevent crash, if due to input bug ckt is not created,
reported by  Andrian
inp.c, evtinit.c: improved error message
suggested by Calin Andrian
remove redundant #include
inpcom.c, implement is_absolute_pathname() and is_plain_filename()
inpcom.c, simplify using is_plain_filename(), fix incorrect comments
inpcom.c, fix inp_pathopen(), relative path shall be expanded regarding "sourcepath"
inpcom.c, fix inp_pathopen(), always try to fopen() relative to the current working directory first
inpcom.c, remove variable "sourcefile" and references to "sourcefile"

this will no longer be required for access to input file residing
in the executable's directory
inpcom.c, for mingw absolute pathnames may begin with /d/

allow this when variable 'mingwpath' is set in .spinit
inpcom.c, introduce inp_pathresolve(), rewrite inp_pathopen() using this
tilde.c, enable search for home dir under MS Windows
inpcom.c, introduce inp_pathresolve_at()
inpcom.c, simplify `.include' file processing using inp_pathresolve_at()
inpcom.c, abstraction, introduce expand_section_ref()
inpcom.c, reorder
inpcom.c, whitespace cleanup
inpcom.c, cleanup
inpcom.c, recurse expand_section_ref()
inpcom.c, rewrite .lib reading

use canonical file names to remember known .lib files
remember their directories in `habitat'
use inp_pathresolve_at() to find .lib files with regard to `searchpath' and current directory