* glibc-tdep.h (struct gdbarch): Declare opaque.

* glibc-tdep.h (struct gdbarch): Declare opaque.
(glibc_skip_solib_resolver): Adjust prototype.
* glibc-tdep.c (glibc_skip_solib_resolver): Adjust.
* arm-linux-tdep.c (arm_linux_skip_solib_resolver): Remove.
(arm_linux_init_abi): Set skip_solib_resolver.
* i386-linux-tdep.c (i386_linux_skip_solib_resolver): Remove.
(i386_linux_init_abi): Set skip_solib_resolver.
* config/arm/tm-linux.h (SKIP_SOLIB_RESOLVER): Remove.
(arm_linux_skip_solib_resolver): Remove prototype.
* config/i386/tm-linux.h (SKIP_SOLIB_RESOLVER): Remove.
(i386_linux_skip_solib_resolver): Remove prototype.