* gscanner.c: new file for GScanner: Flexible lexical scanner for
general purpose.
* glib_pre2.h: added GScanner includes. added g_strconcat and g_strtod.
gutils.c (g_strconcat): new function for string concatenation of NULL
terminated parameter list.
(g_strtod): new function to perform best string to double conversion
with or without consideration of the current locale.
-timj
