and remove from individual .c files;
rename include dirs "C:\myprograms\tcl9.0" -> "C:\Tcl" and lib
dirs "C:\myprograms\tcl9.0\lib" -> "C:\Tcl\lib";
suppress some warnings
backend_tcl/zint.c: suppress some warnings
tools/update_version.php: update for "backend_tcl/zint_tcl.dsp" ->
".vcxproj"
manual.pmd: backend_tcl: fix "require package" -> "package require"
and explain "C:\Tcl" may need adjusting
general: update copyright years in ".rc" files
library: remove needless `eci` zeroing in `set_symbol_defaults()`
and make `barcode_seg_funcs` initialization consistent (147 now)
