[RFA] testsuite/gdb.base/maint.exp: Add relative pathname test and fix test for Cygwin

[Andrew Cagney]

Um,  I've so far only looked at this:

 > testsuite/ChangeLog:
 >
 >         * maint.exp: Raise timeout to give Cygwin targeted GDBs more time
 >         for printing symbols and statistics.
 >         Add test for using relative pathnames in "maint print 
msymbols" test.
 >         Mark "maint info sections DATA" XFAIL on Cygwin.
 >         Remove Cygwin XFAIL mark on "help maint dump-me" and "maint 
dump-me"
 >         tests.

not this

> ChangeLog:
> 
>         * symmisc.c: Include gdb_stat.h.
> 	(maintenance_print_msymbols): Use inode numbers to compare files.

Andrew