* gdbarch.sh (skip_prologue): Add gdbarch
as parameter.
* gdbarch.{c,h}: Regenerate.
* alpha-tdep.c (alpha_skip_prologue): Add gdbarch as parameter.
* amd64-tdep.c (amd64_skip_prologue): Likewise.
* avr-tdep.c (avr_skip_prologue): Likewise.
* cris-tdep.c (cris_skip_prologue): Likewise.
* frv-tdep.c (frv_skip_prologue): Likewise.
* h8300-tdep.c (h8300_skip_prologue): Likewise.
* hppa-tdep.c (hppa_skip_prologue): Likewise.
* i386-tdep.c (i386_skip_prologue): Likewise.
* ia64-tdep.c (ia64_skip_prologue): Likewise.
* iq2000-tdep.c (iq2000_skip_prologue): Likewise.
* m32r-tdep.c (m32r_skip_prologue): Likewise.
* m68hc11-tdep.c (m68hc11_skip_prologue): Likewise.
* m68k-tdep.c (m68k_skip_prologue): Likewise.
* m88k-tdep.c (m88k_skip_prologue): Likewise.
* mep-tdep.c (mep_skip_prologue): Likewise.
* mips-tdep.c (mips_skip_prologue): Likewise.
* mn10300-tdep.c (mn10300_skip_prologue): Likewise.
* mt-tdep.c (mt_skip_prologue): Likewise.
* rs6000-tdep.c (rs6000_skip_prologue): Likewise.
* score-tdep.c (score_skip_prologue): Likewise.
* sh64-tdep.c (sh64_skip_prologue): Likewise.
* sh-tdep.c (sh_skip_prologue): Likewise.
* sparc64-tdep.c (sparc64_skip_prologue): Likewise.
* sparc-tdep.c (sparc32_skip_prologue): Likewise.
* spu-tdep.c (spu_skip_prologue): Likewise.
* v850-tdep.c (v850_skip_prologue): Likewise.
* vax-tdep.c (vax_skip_prologue): Likewise.
* xstormy16-tdep.c (xstormy16_skip_prologue): Likewise.
* xtensa-tdep.c (xtensa_skip_prologue): Likewise.
* arm-tdep.c (arm_skip_prologue): Add gdbarch as parameter. Replace
current_gdbarch by gdbarch.
* m32c-tdep.c (m32c_skip_prologue): Likewise.
* s390-tdep.c (s390_skip_prologue): Likewise.