Following the rules for converting to multi-arch, step one says we must 
get it all to compile...  So:

The following patch is needed to enable building of gdb on arm-netbsd.  
The definition of IN_SIGTRAMP tests NAME for being NULL and if not calls 
STREQ to compare the strings.  However, STREQ dereferences the pointers 
directly and this causes a compile time error for the NULL pointer (since 
*(0) is not defined).

<date>  Richard Earnshaw (rearnsha@arm.com)

	* arm-tdep.c (arm_init_extra_frame_info): Cast NULL argument of
	IN_SIGTRAMP to char *.