Revert the following cacao change, when building for armel/armv4:

# HG changeset patch
# User Stefan Ring <stefan@complang.tuwien.ac.at>
# Date 1344071656 -7200
# Node ID 73ffc3dc8c16664613f878a131ded372b2099191
# Parent e153dd602364e16b3f2b275d91cc683c4e3df2bb
arm: Thumb interworking should work on armv5
* src/vm/jit/arm/asmpart.S: Use Thumb interworking-aware instructions for transfer to C code.
* src/vm/jit/arm/codegen.c: Likewise, for ICMD_BUILTIN.
* src/vm/jit/arm/codegen.h: Define macros for BL and BLX instructions.

--- cacao/cacao/src/vm/jit/arm/asmpart.S.orig	2013-01-10 17:45:14.000000000 +0100
+++ cacao/cacao/src/vm/jit/arm/asmpart.S	2013-02-08 17:24:23.744533547 +0100
@@ -1,6 +1,6 @@
 /* src/vm/jit/arm/asmpart.S - Java-C interface functions for ARM
 
-   Copyright (C) 1996-2012
+   Copyright (C) 1996-2005, 2006, 2007, 2008
    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
 
    This file is part of CACAO.
@@ -239,7 +239,7 @@
 	stmfd sp!, {lr}                     /* save return address                */
 	add   a0, sp, #(1*4)                /* pass java sp                       */
 	mov   a1, lr                        /* pass exception address             */
-	blx   exceptions_asm_new_abstractmethoderror
+	bl    exceptions_asm_new_abstractmethoderror
 	ldmfd sp!, {lr}                     /* restore return address             */
 
 	mov   xptr, res1                    /* get exception pointer              */
@@ -281,7 +281,7 @@
 	swi   __ARM_NR_cacheflush
 #endif
 
-	bx    lr
+	mov   pc, lr
 
 
 /* disable exec-stacks ********************************************************/
--- cacao/cacao/src/vm/jit/arm/codegen.h.orig	2013-01-10 17:45:14.000000000 +0100
+++ cacao/cacao/src/vm/jit/arm/codegen.h	2013-02-08 17:24:23.744533547 +0100
@@ -1,6 +1,6 @@
 /* src/vm/jit/arm/codegen.h - code generation macros and definitions for ARM
 
-   Copyright (C) 1996-2012
+   Copyright (C) 1996-2005, 2006, 2007, 2008, 2010
    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
 
    This file is part of CACAO.
@@ -215,19 +215,6 @@
     } while (0)
 
 
-/* branch and branch with link X (instruction set exchange)
-   cond ... conditional execution
-   L ...... branch with link (L=1)
-   reg .... register
-*/
-
-#define M_BRAX(cond,L,reg) \
-    do { \
-		*((u4 *) cd->mcodeptr) = (((cond) << 28) | (0x12 << 20) | (0xfff << 8) | (L << 5) | (1 << 4) | ((reg) & 0xf)); \
-		cd->mcodeptr += 4; \
-    } while (0)
-
-
 /* branch and branch with link: M_BRA
    cond ... conditional execution
    L ...... branch with link (L=1)
@@ -490,9 +477,6 @@
 #define M_BLO(off)         M_BRA(COND_CC,0,off)
 #define M_BLS(off)         M_BRA(COND_LS,0,off)
 
-#define M_BX(a)            M_BRAX(COND_AL,0,a)
-#define M_BLX(a)           M_BRAX(COND_AL,1,a)
-
 
 /******************************************************************************/
 /* macros for load and store instructions *************************************/
--- cacao/cacao/src/vm/jit/arm/codegen.c.orig	2013-01-10 17:45:14.000000000 +0100
+++ cacao/cacao/src/vm/jit/arm/codegen.c	2013-02-08 17:24:23.748533547 +0100
@@ -1,6 +1,6 @@
 /* src/vm/jit/arm/codegen.c - machine code generator for Arm
 
-   Copyright (C) 1996-2012
+   Copyright (C) 1996-2011
    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
 
    This file is part of CACAO.
@@ -1733,7 +1733,8 @@
 
 			/* generate the actual call */
 
-			M_BLX(REG_PV);
+			M_MOV(REG_LR, REG_PC);
+			M_MOV(REG_PC, REG_PV);
 
 			break;